[{"author":[{"id":"4CA96FD4-F248-11E8-B48F-1D18A9856A87","last_name":"Bighin","orcid":"0000-0001-8823-9777","first_name":"Giacomo","full_name":"Bighin, Giacomo"},{"orcid":"0000-0002-6990-7802","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","last_name":"Lemeshko","full_name":"Lemeshko, Mikhail","first_name":"Mikhail"}],"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","oa_version":"Submitted Version","day":"07","main_file_link":[{"url":"https://arxiv.org/abs/1704.02616","open_access":"1"}],"publication_identifier":{"issn":["24699950"]},"month":"08","type":"journal_article","status":"public","title":"Diagrammatic approach to orbital quantum impurities interacting with a many-particle environment","issue":"8","article_processing_charge":"No","date_updated":"2023-09-22T09:53:17Z","oa":1,"scopus_import":"1","intvolume":"        96","isi":1,"language":[{"iso":"eng"}],"publication":"Physical Review B - Condensed Matter and Materials Physics","publication_status":"published","abstract":[{"text":"Recently it was shown that an impurity exchanging orbital angular momentum with a surrounding bath can be described in terms of the angulon quasiparticle [Phys. Rev. Lett. 118, 095301 (2017)]. The angulon consists of a quantum rotor dressed by a many-particle field of boson excitations, and can be formed out of, for example, a molecule or a nonspherical atom in superfluid helium, or out of an electron coupled to lattice phonons or a Bose condensate. Here we develop an approach to the angulon based on the path-integral formalism, which sets the ground for a systematic, perturbative treatment of the angulon problem. The resulting perturbation series can be interpreted in terms of Feynman diagrams, from which, in turn, one can derive a set of diagrammatic rules. These rules extend the machinery of the graphical theory of angular momentum - well known from theoretical atomic spectroscopy - to the case where an environment with an infinite number of degrees of freedom is present. In particular, we show that each diagram can be interpreted as a 'skeleton', which enforces angular momentum conservation, dressed by an additional many-body contribution. This connection between the angulon theory and the graphical theory of angular momentum is particularly important as it allows to systematically and substantially simplify the analytical representation of each diagram. In order to exemplify the technique, we calculate the 1- and 2-loop contributions to the angulon self-energy, the spectral function, and the quasiparticle weight. The diagrammatic theory we develop paves the way to investigate next-to-leading order quantities in a more compact way compared to the variational approaches.","lang":"eng"}],"external_id":{"isi":["000407017100009"]},"project":[{"grant_number":"P29902","_id":"26031614-B435-11E9-9278-68D0E5697425","name":"Quantum rotations in the presence of a many-body environment","call_identifier":"FWF"}],"volume":96,"quality_controlled":"1","department":[{"_id":"MiLe"}],"date_published":"2017-08-07T00:00:00Z","publisher":"American Physical Society","citation":{"apa":"Bighin, G., &#38; Lemeshko, M. (2017). Diagrammatic approach to orbital quantum impurities interacting with a many-particle environment. <i>Physical Review B - Condensed Matter and Materials Physics</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevB.96.085410\">https://doi.org/10.1103/PhysRevB.96.085410</a>","chicago":"Bighin, Giacomo, and Mikhail Lemeshko. “Diagrammatic Approach to Orbital Quantum Impurities Interacting with a Many-Particle Environment.” <i>Physical Review B - Condensed Matter and Materials Physics</i>. American Physical Society, 2017. <a href=\"https://doi.org/10.1103/PhysRevB.96.085410\">https://doi.org/10.1103/PhysRevB.96.085410</a>.","mla":"Bighin, Giacomo, and Mikhail Lemeshko. “Diagrammatic Approach to Orbital Quantum Impurities Interacting with a Many-Particle Environment.” <i>Physical Review B - Condensed Matter and Materials Physics</i>, vol. 96, no. 8, 085410, American Physical Society, 2017, doi:<a href=\"https://doi.org/10.1103/PhysRevB.96.085410\">10.1103/PhysRevB.96.085410</a>.","ista":"Bighin G, Lemeshko M. 2017. Diagrammatic approach to orbital quantum impurities interacting with a many-particle environment. Physical Review B - Condensed Matter and Materials Physics. 96(8), 085410.","short":"G. Bighin, M. Lemeshko, Physical Review B - Condensed Matter and Materials Physics 96 (2017).","ieee":"G. Bighin and M. Lemeshko, “Diagrammatic approach to orbital quantum impurities interacting with a many-particle environment,” <i>Physical Review B - Condensed Matter and Materials Physics</i>, vol. 96, no. 8. American Physical Society, 2017.","ama":"Bighin G, Lemeshko M. Diagrammatic approach to orbital quantum impurities interacting with a many-particle environment. <i>Physical Review B - Condensed Matter and Materials Physics</i>. 2017;96(8). doi:<a href=\"https://doi.org/10.1103/PhysRevB.96.085410\">10.1103/PhysRevB.96.085410</a>"},"publist_id":"6404","date_created":"2018-12-11T11:49:36Z","year":"2017","article_number":"085410","_id":"995","doi":"10.1103/PhysRevB.96.085410"},{"abstract":[{"lang":"eng","text":"Iodine (I 2  ) molecules embedded in He nanodroplets are aligned by a 160 ps long laser pulse. The highest degree of alignment, occurring at the peak of the pulse and quantified by ⟨cos 2 θ 2D ⟩ , is measured as a function of the laser intensity. The results are well described by ⟨cos 2 θ 2D ⟩  calculated for a gas of isolated molecules each with an effective rotational constant of 0.6 times the gas-phase value, and at a temperature of 0.4 K. Theoretical analysis using the angulon quasiparticle to describe rotating molecules in superfluid helium rationalizes why the alignment mechanism is similar to that of isolated molecules with an effective rotational constant. A major advantage of molecules in He droplets is that their 0.4 K temperature leads to stronger alignment than what can generally be achieved for gas phase molecules -- here demonstrated by a direct comparison of the droplet results to measurements on a ∼  1 K supersonic beam of isolated molecules. This point is further illustrated for more complex system by measurements on 1,4-diiodobenzene and 1,4-dibromobenzene. For all three molecular species studied the highest values of ⟨cos 2 θ 2D ⟩  achieved in He droplets exceed 0.96. "}],"external_id":{"isi":["000405089400047"]},"publication_status":"published","volume":147,"quality_controlled":"1","department":[{"_id":"MiLe"}],"date_published":"2017-06-01T00:00:00Z","publisher":"AIP Publishing","article_number":"013946","citation":{"chicago":"Shepperson, Benjamin, Adam Chatterley, Anders Søndergaard, Lars Christiansen, Mikhail Lemeshko, and Henrik Stapelfeldt. “Strongly Aligned Molecules inside Helium Droplets in the Near-Adiabatic Regime.” <i>The Journal of Chemical Physics</i>. AIP Publishing, 2017. <a href=\"https://doi.org/10.1063/1.4983703\">https://doi.org/10.1063/1.4983703</a>.","ista":"Shepperson B, Chatterley A, Søndergaard A, Christiansen L, Lemeshko M, Stapelfeldt H. 2017. Strongly aligned molecules inside helium droplets in the near-adiabatic regime. The Journal of Chemical Physics. 147(1), 013946.","mla":"Shepperson, Benjamin, et al. “Strongly Aligned Molecules inside Helium Droplets in the Near-Adiabatic Regime.” <i>The Journal of Chemical Physics</i>, vol. 147, no. 1, 013946, AIP Publishing, 2017, doi:<a href=\"https://doi.org/10.1063/1.4983703\">10.1063/1.4983703</a>.","short":"B. Shepperson, A. Chatterley, A. Søndergaard, L. Christiansen, M. Lemeshko, H. Stapelfeldt, The Journal of Chemical Physics 147 (2017).","ama":"Shepperson B, Chatterley A, Søndergaard A, Christiansen L, Lemeshko M, Stapelfeldt H. Strongly aligned molecules inside helium droplets in the near-adiabatic regime. <i>The Journal of Chemical Physics</i>. 2017;147(1). doi:<a href=\"https://doi.org/10.1063/1.4983703\">10.1063/1.4983703</a>","ieee":"B. Shepperson, A. Chatterley, A. Søndergaard, L. Christiansen, M. Lemeshko, and H. Stapelfeldt, “Strongly aligned molecules inside helium droplets in the near-adiabatic regime,” <i>The Journal of Chemical Physics</i>, vol. 147, no. 1. AIP Publishing, 2017.","apa":"Shepperson, B., Chatterley, A., Søndergaard, A., Christiansen, L., Lemeshko, M., &#38; Stapelfeldt, H. (2017). Strongly aligned molecules inside helium droplets in the near-adiabatic regime. <i>The Journal of Chemical Physics</i>. AIP Publishing. <a href=\"https://doi.org/10.1063/1.4983703\">https://doi.org/10.1063/1.4983703</a>"},"date_created":"2018-12-11T11:49:36Z","publist_id":"6403","year":"2017","doi":"10.1063/1.4983703","_id":"996","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","oa_version":"Submitted Version","day":"01","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1704.03684"}],"publication_identifier":{"issn":["00219606"]},"month":"06","author":[{"last_name":"Shepperson","first_name":"Benjamin","full_name":"Shepperson, Benjamin"},{"last_name":"Chatterley","first_name":"Adam","full_name":"Chatterley, Adam"},{"full_name":"Søndergaard, Anders","first_name":"Anders","last_name":"Søndergaard"},{"last_name":"Christiansen","first_name":"Lars","full_name":"Christiansen, Lars"},{"id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","last_name":"Lemeshko","orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail","first_name":"Mikhail"},{"full_name":"Stapelfeldt, Henrik","first_name":"Henrik","last_name":"Stapelfeldt"}],"type":"journal_article","status":"public","intvolume":"       147","scopus_import":"1","isi":1,"title":"Strongly aligned molecules inside helium droplets in the near-adiabatic regime","issue":"1","article_processing_charge":"No","oa":1,"date_updated":"2024-02-28T13:02:26Z","publication":"The Journal of Chemical Physics","language":[{"iso":"eng"}]},{"article_number":"235301","ec_funded":1,"year":"2017","citation":{"ista":"Yakaboylu E, Deuchert A, Lemeshko M. 2017. Emergence of non-abelian magnetic monopoles in a quantum impurity problem. Physical Review Letters. 119(23), 235301.","mla":"Yakaboylu, Enderalp, et al. “Emergence of Non-Abelian Magnetic Monopoles in a Quantum Impurity Problem.” <i>Physical Review Letters</i>, vol. 119, no. 23, 235301, American Physical Society, 2017, doi:<a href=\"https://doi.org/10.1103/PhysRevLett.119.235301\">10.1103/PhysRevLett.119.235301</a>.","chicago":"Yakaboylu, Enderalp, Andreas Deuchert, and Mikhail Lemeshko. “Emergence of Non-Abelian Magnetic Monopoles in a Quantum Impurity Problem.” <i>Physical Review Letters</i>. American Physical Society, 2017. <a href=\"https://doi.org/10.1103/PhysRevLett.119.235301\">https://doi.org/10.1103/PhysRevLett.119.235301</a>.","ama":"Yakaboylu E, Deuchert A, Lemeshko M. Emergence of non-abelian magnetic monopoles in a quantum impurity problem. <i>Physical Review Letters</i>. 2017;119(23). doi:<a href=\"https://doi.org/10.1103/PhysRevLett.119.235301\">10.1103/PhysRevLett.119.235301</a>","ieee":"E. Yakaboylu, A. Deuchert, and M. Lemeshko, “Emergence of non-abelian magnetic monopoles in a quantum impurity problem,” <i>Physical Review Letters</i>, vol. 119, no. 23. American Physical Society, 2017.","short":"E. Yakaboylu, A. Deuchert, M. Lemeshko, Physical Review Letters 119 (2017).","apa":"Yakaboylu, E., Deuchert, A., &#38; Lemeshko, M. (2017). Emergence of non-abelian magnetic monopoles in a quantum impurity problem. <i>Physical Review Letters</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevLett.119.235301\">https://doi.org/10.1103/PhysRevLett.119.235301</a>"},"date_created":"2018-12-11T11:49:36Z","publist_id":"6401","doi":"10.1103/PhysRevLett.119.235301","_id":"997","article_type":"original","abstract":[{"text":"Recently it was shown that molecules rotating in superfluid helium can be described in terms of the angulon quasiparticles (Phys. Rev. Lett. 118, 095301 (2017)). Here we demonstrate that in the experimentally realized regime the angulon can be seen as a point charge on a 2-sphere interacting with a gauge field of a non-abelian magnetic monopole. Unlike in several other settings, the gauge fields of the angulon problem emerge in the real coordinate space, as opposed to the momentum space or some effective parameter space. Furthermore, we find a topological transition associated with making the monopole abelian, which takes place in the vicinity of the previously reported angulon instabilities. These results pave the way for studying topological phenomena in experiments on molecules trapped in superfluid helium nanodroplets, as well as on other realizations of orbital impurity problems.","lang":"eng"}],"external_id":{"arxiv":["1705.05162"],"isi":["000417132100007"]},"publication_status":"published","date_published":"2017-12-06T00:00:00Z","publisher":"American Physical Society","quality_controlled":"1","volume":119,"department":[{"_id":"MiLe"},{"_id":"RoSe"}],"project":[{"name":"International IST Postdoc Fellowship Programme","call_identifier":"FP7","grant_number":"291734","_id":"25681D80-B435-11E9-9278-68D0E5697425"},{"name":"Analysis of quantum many-body systems","call_identifier":"H2020","_id":"25C6DC12-B435-11E9-9278-68D0E5697425","grant_number":"694227"},{"grant_number":"P29902","_id":"26031614-B435-11E9-9278-68D0E5697425","name":"Quantum rotations in the presence of a many-body environment","call_identifier":"FWF"}],"isi":1,"scopus_import":"1","intvolume":"       119","article_processing_charge":"No","issue":"23","date_updated":"2023-10-10T13:31:54Z","oa":1,"title":"Emergence of non-abelian magnetic monopoles in a quantum impurity problem","publication":"Physical Review Letters","language":[{"iso":"eng"}],"publication_identifier":{"issn":["0031-9007"]},"month":"12","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","oa_version":"Preprint","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1705.05162"}],"day":"06","arxiv":1,"author":[{"first_name":"Enderalp","full_name":"Yakaboylu, Enderalp","orcid":"0000-0001-5973-0874","last_name":"Yakaboylu","id":"38CB71F6-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Andreas","full_name":"Deuchert, Andreas","last_name":"Deuchert","id":"4DA65CD0-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0003-3146-6746"},{"id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","last_name":"Lemeshko","orcid":"0000-0002-6990-7802","first_name":"Mikhail","full_name":"Lemeshko, Mikhail"}],"type":"journal_article","status":"public"},{"abstract":[{"lang":"eng","text":"Rotation of molecules embedded in He nanodroplets is explored by a combination of fs laser-induced alignment experiments and angulon quasiparticle theory. We demonstrate that at low fluence of the fs alignment pulse, the molecule and its solvation shell can be set into coherent collective rotation lasting long enough to form revivals. With increasing fluence, however, the revivals disappear -- instead, rotational dynamics as rapid as for an isolated molecule is observed during the first few picoseconds. Classical calculations trace this phenomenon to transient decoupling of the molecule from its He shell. Our results open novel opportunities for studying non-equilibrium solute-solvent dynamics and quantum thermalization. "}],"external_id":{"isi":["000401664000005"]},"publication_status":"published","volume":118,"quality_controlled":"1","department":[{"_id":"MiLe"}],"date_published":"2017-05-19T00:00:00Z","publisher":"American Physical Society","project":[{"_id":"26031614-B435-11E9-9278-68D0E5697425","grant_number":"P29902","name":"Quantum rotations in the presence of a many-body environment","call_identifier":"FWF"}],"article_number":"203203","publist_id":"6260","citation":{"apa":"Shepperson, B., Søndergaard, A., Christiansen, L., Kaczmarczyk, J., Zillich, R., Lemeshko, M., &#38; Stapelfeldt, H. (2017). Laser-induced rotation of iodine molecules in helium nanodroplets: Revivals and breaking-free. <i>Physical Review Letters</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevLett.118.203203\">https://doi.org/10.1103/PhysRevLett.118.203203</a>","short":"B. Shepperson, A. Søndergaard, L. Christiansen, J. Kaczmarczyk, R. Zillich, M. Lemeshko, H. Stapelfeldt, Physical Review Letters 118 (2017).","ieee":"B. Shepperson <i>et al.</i>, “Laser-induced rotation of iodine molecules in helium nanodroplets: Revivals and breaking-free,” <i>Physical Review Letters</i>, vol. 118, no. 20. American Physical Society, 2017.","ama":"Shepperson B, Søndergaard A, Christiansen L, et al. Laser-induced rotation of iodine molecules in helium nanodroplets: Revivals and breaking-free. <i>Physical Review Letters</i>. 2017;118(20). doi:<a href=\"https://doi.org/10.1103/PhysRevLett.118.203203\">10.1103/PhysRevLett.118.203203</a>","mla":"Shepperson, Benjamin, et al. “Laser-Induced Rotation of Iodine Molecules in Helium Nanodroplets: Revivals and Breaking-Free.” <i>Physical Review Letters</i>, vol. 118, no. 20, 203203, American Physical Society, 2017, doi:<a href=\"https://doi.org/10.1103/PhysRevLett.118.203203\">10.1103/PhysRevLett.118.203203</a>.","ista":"Shepperson B, Søndergaard A, Christiansen L, Kaczmarczyk J, Zillich R, Lemeshko M, Stapelfeldt H. 2017. Laser-induced rotation of iodine molecules in helium nanodroplets: Revivals and breaking-free. Physical Review Letters. 118(20), 203203.","chicago":"Shepperson, Benjamin, Anders Søndergaard, Lars Christiansen, Jan Kaczmarczyk, Robert Zillich, Mikhail Lemeshko, and Henrik Stapelfeldt. “Laser-Induced Rotation of Iodine Molecules in Helium Nanodroplets: Revivals and Breaking-Free.” <i>Physical Review Letters</i>. American Physical Society, 2017. <a href=\"https://doi.org/10.1103/PhysRevLett.118.203203\">https://doi.org/10.1103/PhysRevLett.118.203203</a>."},"date_created":"2018-12-11T11:50:12Z","year":"2017","doi":"10.1103/PhysRevLett.118.203203","_id":"1109","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","day":"19","main_file_link":[{"url":"https://arxiv.org/abs/1702.01977","open_access":"1"}],"oa_version":"Preprint","month":"05","author":[{"full_name":"Shepperson, Benjamin","first_name":"Benjamin","last_name":"Shepperson"},{"first_name":"Anders","full_name":"Søndergaard, Anders","last_name":"Søndergaard"},{"last_name":"Christiansen","first_name":"Lars","full_name":"Christiansen, Lars"},{"first_name":"Jan","full_name":"Kaczmarczyk, Jan","orcid":"0000-0002-1629-3675","last_name":"Kaczmarczyk","id":"46C405DE-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Zillich","full_name":"Zillich, Robert","first_name":"Robert"},{"last_name":"Lemeshko","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-6990-7802","first_name":"Mikhail","full_name":"Lemeshko, Mikhail"},{"first_name":"Henrik","full_name":"Stapelfeldt, Henrik","last_name":"Stapelfeldt"}],"type":"journal_article","status":"public","scopus_import":"1","intvolume":"       118","isi":1,"title":"Laser-induced rotation of iodine molecules in helium nanodroplets: Revivals and breaking-free","issue":"20","article_processing_charge":"No","date_updated":"2023-09-20T11:36:17Z","oa":1,"publication":"Physical Review Letters","language":[{"iso":"eng"}]},{"_id":"1119","doi":"10.1103/PhysRevLett.118.095301","publist_id":"6243","date_created":"2018-12-11T11:50:15Z","citation":{"ista":"Lemeshko M. 2017. Quasiparticle approach to molecules interacting with quantum solvents. Physical Review Letters. 118(9), 095301.","mla":"Lemeshko, Mikhail. “Quasiparticle Approach to Molecules Interacting with Quantum Solvents.” <i>Physical Review Letters</i>, vol. 118, no. 9, 095301, American Physical Society, 2017, doi:<a href=\"https://doi.org/10.1103/PhysRevLett.118.095301\">10.1103/PhysRevLett.118.095301</a>.","chicago":"Lemeshko, Mikhail. “Quasiparticle Approach to Molecules Interacting with Quantum Solvents.” <i>Physical Review Letters</i>. American Physical Society, 2017. <a href=\"https://doi.org/10.1103/PhysRevLett.118.095301\">https://doi.org/10.1103/PhysRevLett.118.095301</a>.","short":"M. Lemeshko, Physical Review Letters 118 (2017).","ama":"Lemeshko M. Quasiparticle approach to molecules interacting with quantum solvents. <i>Physical Review Letters</i>. 2017;118(9). doi:<a href=\"https://doi.org/10.1103/PhysRevLett.118.095301\">10.1103/PhysRevLett.118.095301</a>","ieee":"M. Lemeshko, “Quasiparticle approach to molecules interacting with quantum solvents,” <i>Physical Review Letters</i>, vol. 118, no. 9. American Physical Society, 2017.","apa":"Lemeshko, M. (2017). Quasiparticle approach to molecules interacting with quantum solvents. <i>Physical Review Letters</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevLett.118.095301\">https://doi.org/10.1103/PhysRevLett.118.095301</a>"},"year":"2017","article_number":"095301","project":[{"name":"ROOTS Genome-wide Analysis of Root Traits","grant_number":"11-NSF-1070","_id":"25636330-B435-11E9-9278-68D0E5697425"}],"department":[{"_id":"MiLe"}],"volume":118,"quality_controlled":"1","publisher":"American Physical Society","date_published":"2017-02-27T00:00:00Z","publication_status":"published","external_id":{"isi":["000404769200006"]},"abstract":[{"text":"Understanding the behavior of molecules interacting with superfluid helium represents a formidable challenge and, in general, requires approaches relying on large-scale numerical simulations. Here we demonstrate that experimental data collected over the last 20 years provide evidence that molecules immersed in superfluid helium form recently-predicted angulon quasiparticles [Phys. Rev. Lett. 114, 203001 (2015)]. Most importantly, casting the many-body problem in terms of angulons amounts to a drastic simplification and yields effective molecular moments of inertia as straightforward analytic solutions of a simple microscopic Hamiltonian. The outcome of the angulon theory is in good agreement with experiment for a broad range of molecular impurities, from heavy to medium-mass to light species. These results pave the way to understanding molecular rotation in liquid and crystalline phases in terms of the angulon quasiparticle.","lang":"eng"}],"language":[{"iso":"eng"}],"publication":"Physical Review Letters","title":"Quasiparticle approach to molecules interacting with quantum solvents","date_updated":"2023-09-20T11:31:22Z","oa":1,"issue":"9","article_processing_charge":"No","intvolume":"       118","isi":1,"type":"journal_article","status":"public","author":[{"orcid":"0000-0002-6990-7802","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","last_name":"Lemeshko","full_name":"Lemeshko, Mikhail","first_name":"Mikhail"}],"day":"27","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1610.01604"}],"oa_version":"Submitted Version","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","month":"02","publication_identifier":{"issn":["00319007"]}},{"intvolume":"        95","scopus_import":"1","isi":1,"title":"Angular self-localization of impurities rotating in a bosonic bath","oa":1,"date_updated":"2023-09-20T11:30:58Z","article_processing_charge":"No","issue":"3","publication":"Physical Review A","language":[{"iso":"eng"}],"day":"06","oa_version":"Published Version","main_file_link":[{"url":"https://arxiv.org/abs/1610.04908","open_access":"1"}],"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","publication_identifier":{"issn":["24699926"]},"month":"03","author":[{"full_name":"Li, Xiang","first_name":"Xiang","id":"4B7E523C-F248-11E8-B48F-1D18A9856A87","last_name":"Li"},{"full_name":"Seiringer, Robert","first_name":"Robert","last_name":"Seiringer","id":"4AFD0470-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-6781-0521"},{"first_name":"Mikhail","full_name":"Lemeshko, Mikhail","last_name":"Lemeshko","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-6990-7802"}],"type":"journal_article","status":"public","ec_funded":1,"article_number":"033608","related_material":{"record":[{"status":"public","relation":"dissertation_contains","id":"8958"}]},"publist_id":"6242","citation":{"short":"X. Li, R. Seiringer, M. Lemeshko, Physical Review A 95 (2017).","ieee":"X. Li, R. Seiringer, and M. Lemeshko, “Angular self-localization of impurities rotating in a bosonic bath,” <i>Physical Review A</i>, vol. 95, no. 3. American Physical Society, 2017.","ama":"Li X, Seiringer R, Lemeshko M. Angular self-localization of impurities rotating in a bosonic bath. <i>Physical Review A</i>. 2017;95(3). doi:<a href=\"https://doi.org/10.1103/PhysRevA.95.033608\">10.1103/PhysRevA.95.033608</a>","ista":"Li X, Seiringer R, Lemeshko M. 2017. Angular self-localization of impurities rotating in a bosonic bath. Physical Review A. 95(3), 033608.","chicago":"Li, Xiang, Robert Seiringer, and Mikhail Lemeshko. “Angular Self-Localization of Impurities Rotating in a Bosonic Bath.” <i>Physical Review A</i>. American Physical Society, 2017. <a href=\"https://doi.org/10.1103/PhysRevA.95.033608\">https://doi.org/10.1103/PhysRevA.95.033608</a>.","mla":"Li, Xiang, et al. “Angular Self-Localization of Impurities Rotating in a Bosonic Bath.” <i>Physical Review A</i>, vol. 95, no. 3, 033608, American Physical Society, 2017, doi:<a href=\"https://doi.org/10.1103/PhysRevA.95.033608\">10.1103/PhysRevA.95.033608</a>.","apa":"Li, X., Seiringer, R., &#38; Lemeshko, M. (2017). Angular self-localization of impurities rotating in a bosonic bath. <i>Physical Review A</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevA.95.033608\">https://doi.org/10.1103/PhysRevA.95.033608</a>"},"date_created":"2018-12-11T11:50:15Z","year":"2017","doi":"10.1103/PhysRevA.95.033608","_id":"1120","external_id":{"isi":["000395981900009"]},"abstract":[{"text":"The existence of a self-localization transition in the polaron problem has been under an active debate ever since Landau suggested it 83 years ago. Here we reveal the self-localization transition for the rotational analogue of the polaron -- the angulon quasiparticle. We show that, unlike for the polarons, self-localization of angulons occurs at finite impurity-bath coupling already at the mean-field level. The transition is accompanied by the spherical-symmetry breaking of the angulon ground state and a discontinuity in the first derivative of the ground-state energy. Moreover, the type of the symmetry breaking is dictated by the symmetry of the microscopic impurity-bath interaction, which leads to a number of distinct self-localized states. The predicted effects can potentially be addressed in experiments on cold molecules trapped in superfluid helium droplets and ultracold quantum gases, as well as on electronic excitations in solids and Bose-Einstein condensates. ","lang":"eng"}],"publication_status":"published","department":[{"_id":"MiLe"},{"_id":"RoSe"}],"volume":95,"quality_controlled":"1","publisher":"American Physical Society","date_published":"2017-03-06T00:00:00Z","project":[{"_id":"25C6DC12-B435-11E9-9278-68D0E5697425","grant_number":"694227","call_identifier":"H2020","name":"Analysis of quantum many-body systems"},{"_id":"25C878CE-B435-11E9-9278-68D0E5697425","grant_number":"P27533_N27","call_identifier":"FWF","name":"Structure of the Excitation Spectrum for Many-Body Quantum Systems"},{"name":"Quantum rotations in the presence of a many-body environment","call_identifier":"FWF","_id":"26031614-B435-11E9-9278-68D0E5697425","grant_number":"P29902"}]},{"publist_id":"6225","citation":{"apa":"Yakaboylu, E., &#38; Lemeshko, M. (2017). Anomalous screening of quantum impurities by a neutral environment. <i>Physical Review Letters</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevLett.118.085302\">https://doi.org/10.1103/PhysRevLett.118.085302</a>","mla":"Yakaboylu, Enderalp, and Mikhail Lemeshko. “Anomalous Screening of Quantum Impurities by a Neutral Environment.” <i>Physical Review Letters</i>, vol. 118, no. 8, 085302, American Physical Society, 2017, doi:<a href=\"https://doi.org/10.1103/PhysRevLett.118.085302\">10.1103/PhysRevLett.118.085302</a>.","ista":"Yakaboylu E, Lemeshko M. 2017. Anomalous screening of quantum impurities by a neutral environment. Physical Review Letters. 118(8), 085302.","chicago":"Yakaboylu, Enderalp, and Mikhail Lemeshko. “Anomalous Screening of Quantum Impurities by a Neutral Environment.” <i>Physical Review Letters</i>. American Physical Society, 2017. <a href=\"https://doi.org/10.1103/PhysRevLett.118.085302\">https://doi.org/10.1103/PhysRevLett.118.085302</a>.","short":"E. Yakaboylu, M. Lemeshko, Physical Review Letters 118 (2017).","ama":"Yakaboylu E, Lemeshko M. Anomalous screening of quantum impurities by a neutral environment. <i>Physical Review Letters</i>. 2017;118(8). doi:<a href=\"https://doi.org/10.1103/PhysRevLett.118.085302\">10.1103/PhysRevLett.118.085302</a>","ieee":"E. Yakaboylu and M. Lemeshko, “Anomalous screening of quantum impurities by a neutral environment,” <i>Physical Review Letters</i>, vol. 118, no. 8. American Physical Society, 2017."},"date_created":"2018-12-11T11:50:19Z","year":"2017","ec_funded":1,"article_number":"085302","_id":"1133","doi":"10.1103/PhysRevLett.118.085302","publication_status":"published","external_id":{"isi":["000394667600003"]},"abstract":[{"text":"It is a common knowledge that an effective interaction of a quantum impurity with an electromagnetic field can be screened by surrounding charge carriers, whether mobile or static. Here we demonstrate that very strong, \"anomalous\" screening can take place in the presence of a neutral, weakly polarizable environment, due to an exchange of orbital angular momentum between the impurity and the bath. Furthermore, we show that it is possible to generalize all phenomena related to isolated impurities in an external field to the case when a many-body environment is present, by casting the problem in terms of the angulon quasiparticle. As a result, the relevant observables such as the effective Rabi frequency, geometric phase, and impurity spatial alignment are straightforward to evaluate in terms of a single parameter: the angular-momentum-dependent screening factor.","lang":"eng"}],"project":[{"grant_number":"291734","_id":"25681D80-B435-11E9-9278-68D0E5697425","name":"International IST Postdoc Fellowship Programme","call_identifier":"FP7"},{"grant_number":"P29902","_id":"26031614-B435-11E9-9278-68D0E5697425","call_identifier":"FWF","name":"Quantum rotations in the presence of a many-body environment"}],"department":[{"_id":"MiLe"}],"volume":118,"quality_controlled":"1","publisher":"American Physical Society","date_published":"2017-02-22T00:00:00Z","title":"Anomalous screening of quantum impurities by a neutral environment","date_updated":"2023-09-20T11:30:08Z","oa":1,"article_processing_charge":"No","issue":"8","intvolume":"       118","scopus_import":"1","isi":1,"language":[{"iso":"eng"}],"publication":"Physical Review Letters","author":[{"orcid":"0000-0001-5973-0874","id":"38CB71F6-F248-11E8-B48F-1D18A9856A87","last_name":"Yakaboylu","first_name":"Enderalp","full_name":"Yakaboylu, Enderalp"},{"first_name":"Mikhail","full_name":"Lemeshko, Mikhail","last_name":"Lemeshko","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-6990-7802"}],"main_file_link":[{"url":"https://arxiv.org/abs/1612.02820","open_access":"1"}],"day":"22","oa_version":"Submitted Version","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","month":"02","publication_identifier":{"issn":["00319007"]},"type":"journal_article","status":"public"},{"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","main_file_link":[{"url":"https://arxiv.org/abs/1606.03247","open_access":"1"}],"day":"13","oa_version":"Submitted Version","month":"01","publication_identifier":{"issn":["24699950"]},"author":[{"last_name":"Spałek","full_name":"Spałek, Jozef","first_name":"Jozef"},{"full_name":"Zegrodnik, Michał","first_name":"Michał","last_name":"Zegrodnik"},{"first_name":"Jan","full_name":"Kaczmarczyk, Jan","id":"46C405DE-F248-11E8-B48F-1D18A9856A87","last_name":"Kaczmarczyk","orcid":"0000-0002-1629-3675"}],"type":"journal_article","status":"public","intvolume":"        95","scopus_import":"1","isi":1,"title":"Universal properties of high temperature superconductors from real space pairing t-J-U model and its quantitative comparison with experiment","issue":"2","article_processing_charge":"No","date_updated":"2023-09-20T11:25:56Z","oa":1,"publication":"Physical Review B - Condensed Matter and Materials Physics","language":[{"iso":"eng"}],"abstract":[{"lang":"eng","text":"Selected universal experimental properties of high-temperature superconducting (HTS) cuprates have been singled out in the last decade. One of the pivotal challenges in this field is the designation of a consistent interpretation framework within which we can describe quantitatively the universal features of those systems. Here we analyze in a detailed manner the principal experimental data and compare them quantitatively with the approach based on a single-band model of strongly correlated electrons supplemented with strong antiferromagnetic (super)exchange interaction (the so-called t−J−U model). The model rationale is provided by estimating its microscopic parameters on the basis of the three-band approach for the Cu-O plane. We use our original full Gutzwiller wave-function solution by going beyond the renormalized mean-field theory (RMFT) in a systematic manner. Our approach reproduces very well the observed hole doping (δ) dependence of the kinetic-energy gain in the superconducting phase, one of the principal non-Bardeen-Cooper-Schrieffer features of the cuprates. The calculated Fermi velocity in the nodal direction is practically δ-independent and its universal value agrees very well with that determined experimentally. Also, a weak doping dependence of the Fermi wave vector leads to an almost constant value of the effective mass in a pure superconducting phase which is both observed in experiment and reproduced within our approach. An assessment of the currently used models (t−J, Hubbard) is carried out and the results of the canonical RMFT as a zeroth-order solution are provided for comparison to illustrate the necessity of the introduced higher-order contributions."}],"external_id":{"isi":["000391852800006"]},"publication_status":"published","quality_controlled":"1","volume":95,"department":[{"_id":"MiLe"}],"date_published":"2017-01-13T00:00:00Z","publisher":"American Physical Society","project":[{"name":"International IST Postdoc Fellowship Programme","call_identifier":"FP7","grant_number":"291734","_id":"25681D80-B435-11E9-9278-68D0E5697425"}],"article_number":"024506","ec_funded":1,"date_created":"2018-12-11T11:50:29Z","publist_id":"6195","citation":{"ieee":"J. Spałek, M. Zegrodnik, and J. Kaczmarczyk, “Universal properties of high temperature superconductors from real space pairing t-J-U model and its quantitative comparison with experiment,” <i>Physical Review B - Condensed Matter and Materials Physics</i>, vol. 95, no. 2. American Physical Society, 2017.","ama":"Spałek J, Zegrodnik M, Kaczmarczyk J. Universal properties of high temperature superconductors from real space pairing t-J-U model and its quantitative comparison with experiment. <i>Physical Review B - Condensed Matter and Materials Physics</i>. 2017;95(2). doi:<a href=\"https://doi.org/10.1103/PhysRevB.95.024506\">10.1103/PhysRevB.95.024506</a>","short":"J. Spałek, M. Zegrodnik, J. Kaczmarczyk, Physical Review B - Condensed Matter and Materials Physics 95 (2017).","mla":"Spałek, Jozef, et al. “Universal Properties of High Temperature Superconductors from Real Space Pairing T-J-U Model and Its Quantitative Comparison with Experiment.” <i>Physical Review B - Condensed Matter and Materials Physics</i>, vol. 95, no. 2, 024506, American Physical Society, 2017, doi:<a href=\"https://doi.org/10.1103/PhysRevB.95.024506\">10.1103/PhysRevB.95.024506</a>.","chicago":"Spałek, Jozef, Michał Zegrodnik, and Jan Kaczmarczyk. “Universal Properties of High Temperature Superconductors from Real Space Pairing T-J-U Model and Its Quantitative Comparison with Experiment.” <i>Physical Review B - Condensed Matter and Materials Physics</i>. American Physical Society, 2017. <a href=\"https://doi.org/10.1103/PhysRevB.95.024506\">https://doi.org/10.1103/PhysRevB.95.024506</a>.","ista":"Spałek J, Zegrodnik M, Kaczmarczyk J. 2017. Universal properties of high temperature superconductors from real space pairing t-J-U model and its quantitative comparison with experiment. Physical Review B - Condensed Matter and Materials Physics. 95(2), 024506.","apa":"Spałek, J., Zegrodnik, M., &#38; Kaczmarczyk, J. (2017). Universal properties of high temperature superconductors from real space pairing t-J-U model and its quantitative comparison with experiment. <i>Physical Review B - Condensed Matter and Materials Physics</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevB.95.024506\">https://doi.org/10.1103/PhysRevB.95.024506</a>"},"year":"2017","doi":"10.1103/PhysRevB.95.024506","_id":"1162"},{"publication_identifier":{"issn":["09538984"]},"month":"01","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","day":"16","oa_version":"None","author":[{"full_name":"Wysokiński, Marcin","first_name":"Marcin","last_name":"Wysokiński"},{"last_name":"Kaczmarczyk","id":"46C405DE-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-1629-3675","first_name":"Jan","full_name":"Kaczmarczyk, Jan"}],"type":"journal_article","status":"public","isi":1,"intvolume":"        29","scopus_import":"1","article_processing_charge":"No","issue":"8","date_updated":"2023-09-20T11:25:32Z","title":"Unconventional superconductivity in generalized Hubbard model role of electron–hole symmetry breaking terms","publication":"Journal of Physics: Condensed Matter","language":[{"iso":"eng"}],"abstract":[{"text":"We investigate the effect of the electron-hole (e-h) symmetry breaking on d-wave superconductivity induced by non-local effects of correlations in the generalized Hubbard model. The symmetry breaking is introduced in a two-fold manner: by the next-to-nearest neighbor hopping of electrons and by the charge-bond interaction - the off-diagonal term of the Coulomb potential. Both terms lead to a pronounced asymmetry of the superconducting order parameter. The next-to-nearest neighbor hopping enhances superconductivity for h-doping, while diminishes it for e-doping. The charge-bond interaction alone leads to the opposite effect and, additionally, to the kinetic-energy gain upon condensation in the underdoped regime. With both terms included, with similar amplitudes, the height of the superconducting dome and the critical doping remain in favor of h-doping. The influence of the charge-bond interaction on deviations from symmetry of the shape of the gap at the Fermi surface in the momentum space is briefly discussed.","lang":"eng"}],"external_id":{"isi":["000393955500001"]},"publication_status":"published","date_published":"2017-01-16T00:00:00Z","publisher":"IOP Publishing Ltd.","quality_controlled":"1","volume":29,"department":[{"_id":"MiLe"}],"project":[{"call_identifier":"FP7","name":"International IST Postdoc Fellowship Programme","grant_number":"291734","_id":"25681D80-B435-11E9-9278-68D0E5697425"}],"article_number":"085604","ec_funded":1,"year":"2017","citation":{"apa":"Wysokiński, M., &#38; Kaczmarczyk, J. (2017). Unconventional superconductivity in generalized Hubbard model role of electron–hole symmetry breaking terms. <i>Journal of Physics: Condensed Matter</i>. IOP Publishing Ltd. <a href=\"https://doi.org/10.1088/1361-648X/aa532f\">https://doi.org/10.1088/1361-648X/aa532f</a>","mla":"Wysokiński, Marcin, and Jan Kaczmarczyk. “Unconventional Superconductivity in Generalized Hubbard Model Role of Electron–Hole Symmetry Breaking Terms.” <i>Journal of Physics: Condensed Matter</i>, vol. 29, no. 8, 085604, IOP Publishing Ltd., 2017, doi:<a href=\"https://doi.org/10.1088/1361-648X/aa532f\">10.1088/1361-648X/aa532f</a>.","chicago":"Wysokiński, Marcin, and Jan Kaczmarczyk. “Unconventional Superconductivity in Generalized Hubbard Model Role of Electron–Hole Symmetry Breaking Terms.” <i>Journal of Physics: Condensed Matter</i>. IOP Publishing Ltd., 2017. <a href=\"https://doi.org/10.1088/1361-648X/aa532f\">https://doi.org/10.1088/1361-648X/aa532f</a>.","ista":"Wysokiński M, Kaczmarczyk J. 2017. Unconventional superconductivity in generalized Hubbard model role of electron–hole symmetry breaking terms. Journal of Physics: Condensed Matter. 29(8), 085604.","short":"M. Wysokiński, J. Kaczmarczyk, Journal of Physics: Condensed Matter 29 (2017).","ieee":"M. Wysokiński and J. Kaczmarczyk, “Unconventional superconductivity in generalized Hubbard model role of electron–hole symmetry breaking terms,” <i>Journal of Physics: Condensed Matter</i>, vol. 29, no. 8. IOP Publishing Ltd., 2017.","ama":"Wysokiński M, Kaczmarczyk J. Unconventional superconductivity in generalized Hubbard model role of electron–hole symmetry breaking terms. <i>Journal of Physics: Condensed Matter</i>. 2017;29(8). doi:<a href=\"https://doi.org/10.1088/1361-648X/aa532f\">10.1088/1361-648X/aa532f</a>"},"publist_id":"6194","date_created":"2018-12-11T11:50:29Z","doi":"10.1088/1361-648X/aa532f","_id":"1163"},{"type":"conference","status":"public","alternative_title":["Journal of Physics: Conference Series"],"arxiv":1,"author":[{"full_name":"Camus, Nicolas","first_name":"Nicolas","last_name":"Camus"},{"orcid":"0000-0001-5973-0874","id":"38CB71F6-F248-11E8-B48F-1D18A9856A87","last_name":"Yakaboylu","first_name":"Enderalp","full_name":"Yakaboylu, Enderalp"},{"last_name":"Fechner","first_name":"Lutz","full_name":"Fechner, Lutz"},{"full_name":"Klaiber, Michael","first_name":"Michael","last_name":"Klaiber"},{"last_name":"Laux","first_name":"Martin","full_name":"Laux, Martin"},{"last_name":"Mi","full_name":"Mi, Yonghao","first_name":"Yonghao"},{"last_name":"Hatsagortsyan","full_name":"Hatsagortsyan, Karen","first_name":"Karen"},{"first_name":"Thomas","full_name":"Pfeifer, Thomas","last_name":"Pfeifer"},{"last_name":"Keitel","full_name":"Keitel, Cristoph","first_name":"Cristoph"},{"last_name":"Moshammer","full_name":"Moshammer, Robert","first_name":"Robert"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","file":[{"content_type":"application/pdf","file_size":949321,"relation":"main_file","access_level":"open_access","creator":"dernst","date_created":"2019-01-22T08:34:10Z","date_updated":"2020-07-14T12:46:00Z","checksum":"6e70b525a84f6d5fb175c48e9f5cb59a","file_id":"5871","file_name":"2017_Physics_Camus.pdf"}],"oa_version":"Published Version","day":"14","publication_identifier":{"issn":["17426588"]},"month":"07","conference":{"location":"Kazan, Russian Federation","end_date":"2017-08-21","name":"Annual International Laser Physics Workshop LPHYS","start_date":"2017-08-17"},"language":[{"iso":"eng"}],"title":"Experimental evidence for Wigner's tunneling time","issue":"1","date_updated":"2023-02-23T12:36:07Z","oa":1,"scopus_import":1,"intvolume":"       999","has_accepted_license":"1","volume":999,"quality_controlled":"1","department":[{"_id":"MiLe"}],"license":"https://creativecommons.org/licenses/by/4.0/","date_published":"2017-07-14T00:00:00Z","publisher":"American Physical Society","publication_status":"published","abstract":[{"text":"Tunneling of a particle through a potential barrier remains one of the most remarkable quantum phenomena. Owing to advances in laser technology, electric fields comparable to those electrons experience in atoms are readily generated and open opportunities to dynamically investigate the process of electron tunneling through the potential barrier formed by the superposition of both laser and atomic fields. Attosecond-time and angstrom-space resolution of the strong laser-field technique allow to address fundamental questions related to tunneling, which are still open and debated: Which time is spent under the barrier and what momentum is picked up by the particle in the meantime? In this combined experimental and theoretical study we demonstrate that for strong-field ionization the leading quantum mechanical Wigner treatment for the time resolved description of tunneling is valid. We achieve a high sensitivity on the tunneling barrier and unambiguously isolate its effects by performing a differential study of two systems with almost identical tunneling geometry. Moreover, working with a low frequency laser, we essentially limit the non-adiabaticity of the process as a major source of uncertainty. The agreement between experiment and theory implies two substantial corrections with respect to the widely employed quasiclassical treatment: In addition to a non-vanishing longitudinal momentum along the laser field-direction we provide clear evidence for a non-zero tunneling time delay. This addresses also the fundamental question how the transition occurs from the tunnel barrier to free space classical evolution of the ejected electron.","lang":"eng"}],"external_id":{"arxiv":["1611.03701"]},"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","image":"/images/cc_by.png","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"ddc":["530"],"_id":"313","file_date_updated":"2020-07-14T12:46:00Z","doi":"10.1088/1742-6596/999/1/012004","citation":{"ista":"Camus N, Yakaboylu E, Fechner L, Klaiber M, Laux M, Mi Y, Hatsagortsyan K, Pfeifer T, Keitel C, Moshammer R. 2017. Experimental evidence for Wigner’s tunneling time. Annual International Laser Physics Workshop LPHYS, Journal of Physics: Conference Series, vol. 999, 012004.","mla":"Camus, Nicolas, et al. <i>Experimental Evidence for Wigner’s Tunneling Time</i>. Vol. 999, no. 1, 012004, American Physical Society, 2017, doi:<a href=\"https://doi.org/10.1088/1742-6596/999/1/012004\">10.1088/1742-6596/999/1/012004</a>.","chicago":"Camus, Nicolas, Enderalp Yakaboylu, Lutz Fechner, Michael Klaiber, Martin Laux, Yonghao Mi, Karen Hatsagortsyan, Thomas Pfeifer, Cristoph Keitel, and Robert Moshammer. “Experimental Evidence for Wigner’s Tunneling Time,” Vol. 999. American Physical Society, 2017. <a href=\"https://doi.org/10.1088/1742-6596/999/1/012004\">https://doi.org/10.1088/1742-6596/999/1/012004</a>.","short":"N. Camus, E. Yakaboylu, L. Fechner, M. Klaiber, M. Laux, Y. Mi, K. Hatsagortsyan, T. Pfeifer, C. Keitel, R. Moshammer, in:, American Physical Society, 2017.","ieee":"N. Camus <i>et al.</i>, “Experimental evidence for Wigner’s tunneling time,” presented at the Annual International Laser Physics Workshop LPHYS, Kazan, Russian Federation, 2017, vol. 999, no. 1.","ama":"Camus N, Yakaboylu E, Fechner L, et al. Experimental evidence for Wigner’s tunneling time. In: Vol 999. American Physical Society; 2017. doi:<a href=\"https://doi.org/10.1088/1742-6596/999/1/012004\">10.1088/1742-6596/999/1/012004</a>","apa":"Camus, N., Yakaboylu, E., Fechner, L., Klaiber, M., Laux, M., Mi, Y., … Moshammer, R. (2017). Experimental evidence for Wigner’s tunneling time (Vol. 999). Presented at the Annual International Laser Physics Workshop LPHYS, Kazan, Russian Federation: American Physical Society. <a href=\"https://doi.org/10.1088/1742-6596/999/1/012004\">https://doi.org/10.1088/1742-6596/999/1/012004</a>"},"date_created":"2018-12-11T11:45:46Z","publist_id":"7552","year":"2017","article_number":"012004","related_material":{"record":[{"id":"6013","relation":"later_version","status":"public"}]}},{"type":"journal_article","status":"public","author":[{"first_name":"Bikashkali","full_name":"Midya, Bikashkali","last_name":"Midya","id":"456187FC-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Tomza","first_name":"Michał","full_name":"Tomza, Michał"},{"last_name":"Schmidt","full_name":"Schmidt, Richard","first_name":"Richard"},{"full_name":"Lemeshko, Mikhail","first_name":"Mikhail","last_name":"Lemeshko","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-6990-7802"}],"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","day":"13","main_file_link":[{"url":"https://arxiv.org/abs/1607.06092","open_access":"1"}],"oa_version":"Preprint","month":"10","language":[{"iso":"eng"}],"publication":"Physical Review A - Atomic, Molecular, and Optical Physics","title":"Rotation of cold molecular ions inside a Bose-Einstein condensate","issue":"4","date_updated":"2021-01-12T06:49:37Z","oa":1,"intvolume":"        94","scopus_import":1,"project":[{"_id":"25681D80-B435-11E9-9278-68D0E5697425","grant_number":"291734","call_identifier":"FP7","name":"International IST Postdoc Fellowship Programme"}],"quality_controlled":"1","volume":94,"department":[{"_id":"MiLe"}],"date_published":"2016-10-13T00:00:00Z","publisher":"American Physical Society","publication_status":"published","abstract":[{"lang":"eng","text":"We use recently developed angulon theory [R. Schmidt and M. Lemeshko, Phys. Rev. Lett. 114, 203001 (2015)PRLTAO0031-900710.1103/PhysRevLett.114.203001] to study the rotational spectrum of a cyanide molecular anion immersed into Bose-Einstein condensates of rubidium and strontium. Based on ab initio potential energy surfaces, we provide a detailed study of the rotational Lamb shift and many-body-induced fine structure which arise due to dressing of molecular rotation by a field of phonon excitations. We demonstrate that the magnitude of these effects is large enough in order to be observed in modern experiments on cold molecular ions. Furthermore, we introduce a novel method to construct pseudopotentials starting from the ab initio potential energy surfaces, which provides a means to obtain effective coupling constants for low-energy polaron models."}],"_id":"1286","doi":"10.1103/PhysRevA.94.041601","publist_id":"6030","citation":{"ieee":"B. Midya, M. Tomza, R. Schmidt, and M. Lemeshko, “Rotation of cold molecular ions inside a Bose-Einstein condensate,” <i>Physical Review A - Atomic, Molecular, and Optical Physics</i>, vol. 94, no. 4. American Physical Society, 2016.","ama":"Midya B, Tomza M, Schmidt R, Lemeshko M. Rotation of cold molecular ions inside a Bose-Einstein condensate. <i>Physical Review A - Atomic, Molecular, and Optical Physics</i>. 2016;94(4). doi:<a href=\"https://doi.org/10.1103/PhysRevA.94.041601\">10.1103/PhysRevA.94.041601</a>","short":"B. Midya, M. Tomza, R. Schmidt, M. Lemeshko, Physical Review A - Atomic, Molecular, and Optical Physics 94 (2016).","ista":"Midya B, Tomza M, Schmidt R, Lemeshko M. 2016. Rotation of cold molecular ions inside a Bose-Einstein condensate. Physical Review A - Atomic, Molecular, and Optical Physics. 94(4), 041601.","mla":"Midya, Bikashkali, et al. “Rotation of Cold Molecular Ions inside a Bose-Einstein Condensate.” <i>Physical Review A - Atomic, Molecular, and Optical Physics</i>, vol. 94, no. 4, 041601, American Physical Society, 2016, doi:<a href=\"https://doi.org/10.1103/PhysRevA.94.041601\">10.1103/PhysRevA.94.041601</a>.","chicago":"Midya, Bikashkali, Michał Tomza, Richard Schmidt, and Mikhail Lemeshko. “Rotation of Cold Molecular Ions inside a Bose-Einstein Condensate.” <i>Physical Review A - Atomic, Molecular, and Optical Physics</i>. American Physical Society, 2016. <a href=\"https://doi.org/10.1103/PhysRevA.94.041601\">https://doi.org/10.1103/PhysRevA.94.041601</a>.","apa":"Midya, B., Tomza, M., Schmidt, R., &#38; Lemeshko, M. (2016). Rotation of cold molecular ions inside a Bose-Einstein condensate. <i>Physical Review A - Atomic, Molecular, and Optical Physics</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevA.94.041601\">https://doi.org/10.1103/PhysRevA.94.041601</a>"},"date_created":"2018-12-11T11:51:09Z","year":"2016","acknowledgement":"The work was supported by the NSF through a grant for the Institute for Theoretical Atomic, Molecular, and Optical Physics at Harvard University and the Smithsonian Astrophysical Observatory. B.M. acknowledges financial support received from the People Programme (Marie Curie Actions) of the European Union's Seventh Framework Programme (FP7/2007-2013) under REA grant agreement No. 291734. M.T. acknowledges support from the EU Marie Curie COFUND action (ICFOnest), the EU Grants ERC AdG OSYRIS, FP7 SIQS and EQuaM, FETPROACT QUIC, the Spanish Ministry Grants FOQUS (FIS2013-46768-P) and Severo Ochoa (SEV-2015-0522), Generalitat de Catalunya (SGR 874), Fundacio Cellex, the National Science Centre (2015/19/D/ST4/02173), and the PL-Grid Infrastructure.","article_number":"041601","ec_funded":1},{"page":"4621 - 4624","department":[{"_id":"MiLe"}],"volume":41,"quality_controlled":"1","publisher":"Optica Publishing Group","date_published":"2016-10-15T00:00:00Z","project":[{"_id":"25681D80-B435-11E9-9278-68D0E5697425","grant_number":"291734","call_identifier":"FP7","name":"International IST Postdoc Fellowship Programme"}],"abstract":[{"lang":"eng","text":"A planar waveguide with an impedance boundary, composed of nonperfect metallic plates, and with passive or active dielectric filling, is considered. We show the possibility of selective mode guiding and amplification when a homogeneous pump is added to the dielectric and analyze differences in TE and TM mode propagation. Such a non-conservative system is also shown to feature exceptional points for specific and experimentally tunable parameters, which are described for a particular case of transparent dielectric."}],"publication_status":"published","doi":"10.1364/OL.41.004621","_id":"1287","ec_funded":1,"date_created":"2018-12-11T11:51:09Z","publist_id":"6029","citation":{"short":"B. Midya, V. Konotop, Optics Letters 41 (2016) 4621–4624.","ama":"Midya B, Konotop V. Modes and exceptional points in waveguides with impedance boundary conditions. <i>Optics Letters</i>. 2016;41(20):4621-4624. doi:<a href=\"https://doi.org/10.1364/OL.41.004621\">10.1364/OL.41.004621</a>","ieee":"B. Midya and V. Konotop, “Modes and exceptional points in waveguides with impedance boundary conditions,” <i>Optics Letters</i>, vol. 41, no. 20. Optica Publishing Group, pp. 4621–4624, 2016.","mla":"Midya, Bikashkali, and Vladimir Konotop. “Modes and Exceptional Points in Waveguides with Impedance Boundary Conditions.” <i>Optics Letters</i>, vol. 41, no. 20, Optica Publishing Group, 2016, pp. 4621–24, doi:<a href=\"https://doi.org/10.1364/OL.41.004621\">10.1364/OL.41.004621</a>.","chicago":"Midya, Bikashkali, and Vladimir Konotop. “Modes and Exceptional Points in Waveguides with Impedance Boundary Conditions.” <i>Optics Letters</i>. Optica Publishing Group, 2016. <a href=\"https://doi.org/10.1364/OL.41.004621\">https://doi.org/10.1364/OL.41.004621</a>.","ista":"Midya B, Konotop V. 2016. Modes and exceptional points in waveguides with impedance boundary conditions. Optics Letters. 41(20), 4621–4624.","apa":"Midya, B., &#38; Konotop, V. (2016). Modes and exceptional points in waveguides with impedance boundary conditions. <i>Optics Letters</i>. Optica Publishing Group. <a href=\"https://doi.org/10.1364/OL.41.004621\">https://doi.org/10.1364/OL.41.004621</a>"},"acknowledgement":"The research of B.M. is supported by the People Programme (Marie Curie Actions) of the European Union’s Seventh Framework Programme (FP7/2007-2013) under REA grant No. [291734].","year":"2016","type":"journal_article","status":"public","main_file_link":[{"url":"https://arxiv.org/abs/1609.02863","open_access":"1"}],"oa_version":"Preprint","day":"15","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","month":"10","author":[{"full_name":"Midya, Bikashkali","first_name":"Bikashkali","last_name":"Midya","id":"456187FC-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Konotop","first_name":"Vladimir","full_name":"Konotop, Vladimir"}],"publication":"Optics Letters","language":[{"iso":"eng"}],"scopus_import":"1","intvolume":"        41","title":"Modes and exceptional points in waveguides with impedance boundary conditions","date_updated":"2023-10-17T12:16:24Z","oa":1,"issue":"20","article_processing_charge":"No"},{"ec_funded":1,"article_number":"032502","acknowledgement":"This  research  was  supported  in  part  by  FCT, Portugal, through Project No. PTDC/FIS/117606/2010, financed by the European Community  Fund  FEDER  through  the  COMPETE. ","year":"2016","date_created":"2018-12-11T11:52:21Z","publist_id":"5683","citation":{"mla":"Amaro, Pedro, et al. “Relativistic Evaluation of the Two-Photon Decay of the Metastable 1s22s2p3P0 State in Berylliumlike Ions with an Effective-Potential Model.” <i>Physical Review A - Atomic, Molecular, and Optical Physics</i>, vol. 93, no. 3, 032502, American Physical Society, 2016, doi:<a href=\"https://doi.org/10.1103/PhysRevA.93.032502\">10.1103/PhysRevA.93.032502</a>.","ista":"Amaro P, Fratini F, Safari L, Machado J, Guerra M, Indelicato P, Santos J. 2016. Relativistic evaluation of the two-photon decay of the metastable 1s22s2p3P0 state in berylliumlike ions with an effective-potential model. Physical Review A - Atomic, Molecular, and Optical Physics. 93(3), 032502.","chicago":"Amaro, Pedro, Filippo Fratini, Laleh Safari, Jorge Machado, Mauro Guerra, Paul Indelicato, and José Santos. “Relativistic Evaluation of the Two-Photon Decay of the Metastable 1s22s2p3P0 State in Berylliumlike Ions with an Effective-Potential Model.” <i>Physical Review A - Atomic, Molecular, and Optical Physics</i>. American Physical Society, 2016. <a href=\"https://doi.org/10.1103/PhysRevA.93.032502\">https://doi.org/10.1103/PhysRevA.93.032502</a>.","ama":"Amaro P, Fratini F, Safari L, et al. Relativistic evaluation of the two-photon decay of the metastable 1s22s2p3P0 state in berylliumlike ions with an effective-potential model. <i>Physical Review A - Atomic, Molecular, and Optical Physics</i>. 2016;93(3). doi:<a href=\"https://doi.org/10.1103/PhysRevA.93.032502\">10.1103/PhysRevA.93.032502</a>","ieee":"P. Amaro <i>et al.</i>, “Relativistic evaluation of the two-photon decay of the metastable 1s22s2p3P0 state in berylliumlike ions with an effective-potential model,” <i>Physical Review A - Atomic, Molecular, and Optical Physics</i>, vol. 93, no. 3. American Physical Society, 2016.","short":"P. Amaro, F. Fratini, L. Safari, J. Machado, M. Guerra, P. Indelicato, J. Santos, Physical Review A - Atomic, Molecular, and Optical Physics 93 (2016).","apa":"Amaro, P., Fratini, F., Safari, L., Machado, J., Guerra, M., Indelicato, P., &#38; Santos, J. (2016). Relativistic evaluation of the two-photon decay of the metastable 1s22s2p3P0 state in berylliumlike ions with an effective-potential model. <i>Physical Review A - Atomic, Molecular, and Optical Physics</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevA.93.032502\">https://doi.org/10.1103/PhysRevA.93.032502</a>"},"doi":"10.1103/PhysRevA.93.032502","_id":"1496","abstract":[{"lang":"eng","text":"The two-photon 1s2 2s 2p 3P0 1s22s2 1S0 transition in berylliumlike ions is theoretically investigated within a fully relativistic framework and a second-order perturbation theory. We focus our analysis on how electron correlation, as well as the negative-energy spectrum, can affect the forbidden E1M1 decay rate. For this purpose, we include the electronic correlation via an effective local potential and within a single configuration-state model. Due to its experimental interest, evaluations of decay rates are performed for berylliumlike xenon and uranium. We find that the negative-energy contribution can be neglected at the present level of accuracy in the evaluation of the decay rate. On the other hand, if contributions of electronic correlation are not carefully taken into account, it may change the lifetime of the metastable state by up to 20%. By performing a full-relativistic jj-coupling calculation, we found a decrease of the decay rate by two orders of magnitude compared to non-relativistic LS-coupling calculations, for the selected heavy ions."}],"publication_status":"published","publisher":"American Physical Society","date_published":"2016-03-07T00:00:00Z","department":[{"_id":"MiLe"}],"quality_controlled":"1","volume":93,"project":[{"name":"International IST Postdoc Fellowship Programme","call_identifier":"FP7","_id":"25681D80-B435-11E9-9278-68D0E5697425","grant_number":"291734"}],"intvolume":"        93","scopus_import":1,"oa":1,"date_updated":"2021-01-12T06:51:09Z","issue":"3","title":"Relativistic evaluation of the two-photon decay of the metastable 1s22s2p3P0 state in berylliumlike ions with an effective-potential model","publication":"Physical Review A - Atomic, Molecular, and Optical Physics","language":[{"iso":"eng"}],"month":"03","day":"07","main_file_link":[{"url":"http://arxiv.org/abs/1508.06169","open_access":"1"}],"oa_version":"Preprint","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","author":[{"last_name":"Amaro","first_name":"Pedro","full_name":"Amaro, Pedro"},{"full_name":"Fratini, Filippo","first_name":"Filippo","last_name":"Fratini"},{"id":"3C325E5E-F248-11E8-B48F-1D18A9856A87","last_name":"Safari","full_name":"Safari, Laleh","first_name":"Laleh"},{"full_name":"Machado, Jorge","first_name":"Jorge","last_name":"Machado"},{"last_name":"Guerra","first_name":"Mauro","full_name":"Guerra, Mauro"},{"full_name":"Indelicato, Paul","first_name":"Paul","last_name":"Indelicato"},{"first_name":"José","full_name":"Santos, José","last_name":"Santos"}],"type":"journal_article","status":"public"},{"author":[{"full_name":"Kaczmarczyk, Jan","first_name":"Jan","orcid":"0000-0002-1629-3675","last_name":"Kaczmarczyk","id":"46C405DE-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Hendrik","full_name":"Weimer, Hendrik","last_name":"Weimer"},{"first_name":"Mikhail","full_name":"Lemeshko, Mikhail","orcid":"0000-0002-6990-7802","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","last_name":"Lemeshko"}],"oa_version":"Published Version","day":"22","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","file":[{"date_created":"2018-12-12T10:17:52Z","date_updated":"2020-07-14T12:44:45Z","file_name":"IST-2016-655-v1+1_njp_18_9_093042.pdf","checksum":"2a43e235222755e31ffbd369882c61de","file_id":"5309","access_level":"open_access","content_type":"application/pdf","file_size":1076029,"relation":"main_file","creator":"system"}],"month":"09","status":"public","type":"journal_article","title":"Dissipative preparation of antiferromagnetic order in the Fermi-Hubbard model","oa":1,"pubrep_id":"655","date_updated":"2021-01-12T06:50:01Z","issue":"9","scopus_import":1,"has_accepted_license":"1","intvolume":"        18","language":[{"iso":"eng"}],"publication":"New Journal of Physics","publication_status":"published","abstract":[{"text":"The Fermi-Hubbard model is one of the key models of condensed matter physics, which holds a\r\n\r\npotential for explaining the mystery of high-temperature superconductivity. Recent progress in\r\n\r\nultracold atoms in optical lattices has paved the way to studying the model’s phase diagram using\r\n\r\nthe tools of quantum simulation, which emerged as a promising alternative to the numerical\r\n\r\ncalculations plagued by the infamous sign problem. However, the temperatures achieved using\r\n\r\nelaborate laser cooling protocols so far have been too high to show the appearance of\r\n\r\nantiferromagnetic (AF) and superconducting quantum phases directly. In this work, we demonstrate\r\n\r\nthat using the machinery of dissipative quantum state engineering, one can observe the emergence of\r\n\r\nthe AF order in the Fermi-Hubbard model with fermions in optical lattices. The core of the approach\r\n\r\nis to add incoherent laser scattering in such a way that the AF state emerges as the dark state of\r\n\r\nthe driven-dissipative dynamics. The proposed controlled dissipation channels described in this work\r\n\r\nare straightforward to add to already existing experimental setups.","lang":"eng"}],"ddc":["530"],"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","image":"/images/cc_by.png","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"project":[{"call_identifier":"FP7","name":"International IST Postdoc Fellowship Programme","grant_number":"291734","_id":"25681D80-B435-11E9-9278-68D0E5697425"}],"department":[{"_id":"MiLe"}],"volume":18,"quality_controlled":"1","publisher":"IOP Publishing Ltd.","date_published":"2016-09-22T00:00:00Z","date_created":"2018-12-11T11:51:29Z","citation":{"ista":"Kaczmarczyk J, Weimer H, Lemeshko M. 2016. Dissipative preparation of antiferromagnetic order in the Fermi-Hubbard model. New Journal of Physics. 18(9), 093042.","mla":"Kaczmarczyk, Jan, et al. “Dissipative Preparation of Antiferromagnetic Order in the Fermi-Hubbard Model.” <i>New Journal of Physics</i>, vol. 18, no. 9, 093042, IOP Publishing Ltd., 2016, doi:<a href=\"https://doi.org/10.1088/1367-2630/18/9/093042\">10.1088/1367-2630/18/9/093042</a>.","chicago":"Kaczmarczyk, Jan, Hendrik Weimer, and Mikhail Lemeshko. “Dissipative Preparation of Antiferromagnetic Order in the Fermi-Hubbard Model.” <i>New Journal of Physics</i>. IOP Publishing Ltd., 2016. <a href=\"https://doi.org/10.1088/1367-2630/18/9/093042\">https://doi.org/10.1088/1367-2630/18/9/093042</a>.","short":"J. Kaczmarczyk, H. Weimer, M. Lemeshko, New Journal of Physics 18 (2016).","ama":"Kaczmarczyk J, Weimer H, Lemeshko M. Dissipative preparation of antiferromagnetic order in the Fermi-Hubbard model. <i>New Journal of Physics</i>. 2016;18(9). doi:<a href=\"https://doi.org/10.1088/1367-2630/18/9/093042\">10.1088/1367-2630/18/9/093042</a>","ieee":"J. Kaczmarczyk, H. Weimer, and M. Lemeshko, “Dissipative preparation of antiferromagnetic order in the Fermi-Hubbard model,” <i>New Journal of Physics</i>, vol. 18, no. 9. IOP Publishing Ltd., 2016.","apa":"Kaczmarczyk, J., Weimer, H., &#38; Lemeshko, M. (2016). Dissipative preparation of antiferromagnetic order in the Fermi-Hubbard model. <i>New Journal of Physics</i>. IOP Publishing Ltd. <a href=\"https://doi.org/10.1088/1367-2630/18/9/093042\">https://doi.org/10.1088/1367-2630/18/9/093042</a>"},"publist_id":"5909","acknowledgement":"We acknowledge stimulating discussions with Ken Brown, Tommaso Calarco, Andrew Daley, Suzanne\r\nMcEndoo, Tobias Osborne, Cindy Regal, Luis Santos, Micha\r\nł\r\nTomza, and Martin Zwierlein. The work was supported by the People Programme (Marie Curie Actions) of the European Union's Seventh Framework Programme (FP7/2007-2013) under REA grant agreement no. [291734], by the Volkswagen Foundation, and by DFG within SFB 1227 (DQ-mat).","year":"2016","ec_funded":1,"article_number":"093042","file_date_updated":"2020-07-14T12:44:45Z","_id":"1343","doi":"10.1088/1367-2630/18/9/093042"},{"month":"01","day":"01","oa_version":"Published Version","file":[{"creator":"system","access_level":"open_access","content_type":"application/pdf","relation":"main_file","file_size":1165869,"file_name":"IST-2016-652-v1+1_PhysRevX.6.011012.pdf","checksum":"6757a164d3c38905e05b2b5a188cb8ff","file_id":"5183","date_created":"2018-12-12T10:15:59Z","date_updated":"2020-07-14T12:44:45Z"}],"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","author":[{"last_name":"Schmidt","first_name":"Richard","full_name":"Schmidt, Richard"},{"id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","last_name":"Lemeshko","orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail","first_name":"Mikhail"}],"type":"journal_article","status":"public","scopus_import":1,"has_accepted_license":"1","intvolume":"         6","oa":1,"pubrep_id":"652","date_updated":"2021-01-12T06:50:03Z","issue":"1","title":"Deformation of a quantum many-particle system by a rotating impurity","publication":"Physical Review X","language":[{"iso":"eng"}],"ddc":["530"],"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","image":"/images/cc_by.png","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"abstract":[{"lang":"eng","text":"During the past 70 years, the quantum theory of angular momentum has been successfully applied to describing the properties of nuclei, atoms, and molecules, and their interactions with each other as well as with external fields. Because of the properties of quantum rotations, the angular-momentum algebra can be of tremendous complexity even for a few interacting particles, such as valence electrons of an atom, not to mention larger many-particle systems. In this work, we study an example of the latter: A rotating quantum impurity coupled to a many-body bosonic bath. In the regime of strong impurity-bath couplings, the problem involves the addition of an infinite number of angular momenta, which renders it intractable using currently available techniques. Here, we introduce a novel canonical transformation that allows us to eliminate the complex angular-momentum algebra from such a class of many-body problems. In addition, the transformation exposes the problem's constants of motion, and renders it solvable exactly in the limit of a slowly rotating impurity. We exemplify the technique by showing that there exists a critical rotational speed at which the impurity suddenly acquires one quantum of angular momentum from the many-particle bath. Such an instability is accompanied by the deformation of the phonon density in the frame rotating along with the impurity."}],"publication_status":"published","publisher":"American Physical Society","date_published":"2016-01-01T00:00:00Z","department":[{"_id":"MiLe"}],"quality_controlled":"1","volume":6,"article_number":"011012","acknowledgement":"We are grateful to Eugene Demler, Jan Kaczmarczyk, Laleh Safari, and Hendrik Weimer for insightful discussions. The work was supported by the NSF through a grant for the Institute for Theoretical Atomic, Molecular, and Optical Physics at Harvard University and Smithsonian Astrophysical Observatory.","year":"2016","date_created":"2018-12-11T11:51:30Z","publist_id":"5902","citation":{"ama":"Schmidt R, Lemeshko M. Deformation of a quantum many-particle system by a rotating impurity. <i>Physical Review X</i>. 2016;6(1). doi:<a href=\"https://doi.org/10.1103/PhysRevX.6.011012\">10.1103/PhysRevX.6.011012</a>","ieee":"R. Schmidt and M. Lemeshko, “Deformation of a quantum many-particle system by a rotating impurity,” <i>Physical Review X</i>, vol. 6, no. 1. American Physical Society, 2016.","short":"R. Schmidt, M. Lemeshko, Physical Review X 6 (2016).","ista":"Schmidt R, Lemeshko M. 2016. Deformation of a quantum many-particle system by a rotating impurity. Physical Review X. 6(1), 011012.","mla":"Schmidt, Richard, and Mikhail Lemeshko. “Deformation of a Quantum Many-Particle System by a Rotating Impurity.” <i>Physical Review X</i>, vol. 6, no. 1, 011012, American Physical Society, 2016, doi:<a href=\"https://doi.org/10.1103/PhysRevX.6.011012\">10.1103/PhysRevX.6.011012</a>.","chicago":"Schmidt, Richard, and Mikhail Lemeshko. “Deformation of a Quantum Many-Particle System by a Rotating Impurity.” <i>Physical Review X</i>. American Physical Society, 2016. <a href=\"https://doi.org/10.1103/PhysRevX.6.011012\">https://doi.org/10.1103/PhysRevX.6.011012</a>.","apa":"Schmidt, R., &#38; Lemeshko, M. (2016). Deformation of a quantum many-particle system by a rotating impurity. <i>Physical Review X</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevX.6.011012\">https://doi.org/10.1103/PhysRevX.6.011012</a>"},"doi":"10.1103/PhysRevX.6.011012","file_date_updated":"2020-07-14T12:44:45Z","_id":"1347"},{"scopus_import":1,"intvolume":"        94","title":"Coexistence of nematic order and superconductivity in the Hubbard model","oa":1,"date_updated":"2021-01-12T06:50:05Z","issue":"8","publication":"Physical Review B - Condensed Matter and Materials Physics","language":[{"iso":"eng"}],"day":"30","main_file_link":[{"open_access":"1","url":"http://arxiv.org/abs/1512.06688"}],"oa_version":"Preprint","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","month":"08","author":[{"full_name":"Kaczmarczyk, Jan","first_name":"Jan","orcid":"0000-0002-1629-3675","id":"46C405DE-F248-11E8-B48F-1D18A9856A87","last_name":"Kaczmarczyk"},{"full_name":"Schickling, Tobias","first_name":"Tobias","last_name":"Schickling"},{"first_name":"Jörg","full_name":"Bünemann, Jörg","last_name":"Bünemann"}],"type":"journal_article","status":"public","ec_funded":1,"article_number":"085152","citation":{"short":"J. Kaczmarczyk, T. Schickling, J. Bünemann, Physical Review B - Condensed Matter and Materials Physics 94 (2016).","ieee":"J. Kaczmarczyk, T. Schickling, and J. Bünemann, “Coexistence of nematic order and superconductivity in the Hubbard model,” <i>Physical Review B - Condensed Matter and Materials Physics</i>, vol. 94, no. 8. American Physical Society, 2016.","ama":"Kaczmarczyk J, Schickling T, Bünemann J. Coexistence of nematic order and superconductivity in the Hubbard model. <i>Physical Review B - Condensed Matter and Materials Physics</i>. 2016;94(8). doi:<a href=\"https://doi.org/10.1103/PhysRevB.94.085152\">10.1103/PhysRevB.94.085152</a>","ista":"Kaczmarczyk J, Schickling T, Bünemann J. 2016. Coexistence of nematic order and superconductivity in the Hubbard model. Physical Review B - Condensed Matter and Materials Physics. 94(8), 085152.","mla":"Kaczmarczyk, Jan, et al. “Coexistence of Nematic Order and Superconductivity in the Hubbard Model.” <i>Physical Review B - Condensed Matter and Materials Physics</i>, vol. 94, no. 8, 085152, American Physical Society, 2016, doi:<a href=\"https://doi.org/10.1103/PhysRevB.94.085152\">10.1103/PhysRevB.94.085152</a>.","chicago":"Kaczmarczyk, Jan, Tobias Schickling, and Jörg Bünemann. “Coexistence of Nematic Order and Superconductivity in the Hubbard Model.” <i>Physical Review B - Condensed Matter and Materials Physics</i>. American Physical Society, 2016. <a href=\"https://doi.org/10.1103/PhysRevB.94.085152\">https://doi.org/10.1103/PhysRevB.94.085152</a>.","apa":"Kaczmarczyk, J., Schickling, T., &#38; Bünemann, J. (2016). Coexistence of nematic order and superconductivity in the Hubbard model. <i>Physical Review B - Condensed Matter and Materials Physics</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevB.94.085152\">https://doi.org/10.1103/PhysRevB.94.085152</a>"},"publist_id":"5897","date_created":"2018-12-11T11:51:32Z","acknowledgement":"The authors are grateful to Florian Gebhard and Mikhail Lemeshko for discussions and critical reading of the manuscript. The work was supported by the Ministry of Science and Higher Education in Poland through the Iuventus Plus Grant No. IP2012 017172, as well as by the People Programme (Marie Curie Actions) of the European Union's Seventh Framework Programme (FP7/2007-2013) under REA Grant Agreement No. 291734. J.K. acknowledges hospitality of the Leibniz Universität in Hannover where a large part of the work was performed.","year":"2016","doi":"10.1103/PhysRevB.94.085152","_id":"1352","abstract":[{"text":"We study the interplay of nematic and superconducting order in the two-dimensional Hubbard model and show that they can coexist, especially when superconductivity is not the energetically dominant phase. Due to a breaking of the C4 symmetry, the coexisting phase inherently contains admixture of the s-wave pairing components. As a result, the superconducting gap exhibits nonstandard features including changed nodal directions. Our results also show that in the optimally doped regime the pure superconducting phase is typically unstable towards developing nematicity (breaking of the C4 symmetry). This has implications for the cuprate high-Tc superconductors, for which in this regime the so-called intertwined orders have recently been observed. Namely, the coexisting phase may be viewed as a precursor to such more involved patterns of symmetry breaking.","lang":"eng"}],"publication_status":"published","department":[{"_id":"MiLe"}],"quality_controlled":"1","volume":94,"publisher":"American Physical Society","date_published":"2016-08-30T00:00:00Z","project":[{"_id":"25681D80-B435-11E9-9278-68D0E5697425","grant_number":"291734","call_identifier":"FP7","name":"International IST Postdoc Fellowship Programme"}]},{"_id":"1368","doi":"10.1103/PhysRevB.94.024517","publist_id":"5844","citation":{"apa":"Wysokiński, M., Kaczmarczyk, J., &#38; Spałek, J. (2016). Correlation driven d wave superconductivity in Anderson lattice model: Two gaps. <i>Physical Review B - Condensed Matter and Materials Physics</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevB.94.024517\">https://doi.org/10.1103/PhysRevB.94.024517</a>","ista":"Wysokiński M, Kaczmarczyk J, Spałek J. 2016. Correlation driven d wave superconductivity in Anderson lattice model: Two gaps. Physical Review B - Condensed Matter and Materials Physics. 94(2), 024517.","mla":"Wysokiński, Marcin, et al. “Correlation Driven d Wave Superconductivity in Anderson Lattice Model: Two Gaps.” <i>Physical Review B - Condensed Matter and Materials Physics</i>, vol. 94, no. 2, 024517, American Physical Society, 2016, doi:<a href=\"https://doi.org/10.1103/PhysRevB.94.024517\">10.1103/PhysRevB.94.024517</a>.","chicago":"Wysokiński, Marcin, Jan Kaczmarczyk, and Jozef Spałek. “Correlation Driven d Wave Superconductivity in Anderson Lattice Model: Two Gaps.” <i>Physical Review B - Condensed Matter and Materials Physics</i>. American Physical Society, 2016. <a href=\"https://doi.org/10.1103/PhysRevB.94.024517\">https://doi.org/10.1103/PhysRevB.94.024517</a>.","short":"M. Wysokiński, J. Kaczmarczyk, J. Spałek, Physical Review B - Condensed Matter and Materials Physics 94 (2016).","ieee":"M. Wysokiński, J. Kaczmarczyk, and J. Spałek, “Correlation driven d wave superconductivity in Anderson lattice model: Two gaps,” <i>Physical Review B - Condensed Matter and Materials Physics</i>, vol. 94, no. 2. American Physical Society, 2016.","ama":"Wysokiński M, Kaczmarczyk J, Spałek J. Correlation driven d wave superconductivity in Anderson lattice model: Two gaps. <i>Physical Review B - Condensed Matter and Materials Physics</i>. 2016;94(2). doi:<a href=\"https://doi.org/10.1103/PhysRevB.94.024517\">10.1103/PhysRevB.94.024517</a>"},"date_created":"2018-12-11T11:51:37Z","year":"2016","acknowledgement":"The  work  has  been  supported  by  the  National Science  Center  (NCN)  under  the  Grant  MAESTRO,  No.\r\nDEC-2012/04/A/ST3/00342. ","article_number":"024517","ec_funded":1,"project":[{"grant_number":"291734","_id":"25681D80-B435-11E9-9278-68D0E5697425","name":"International IST Postdoc Fellowship Programme","call_identifier":"FP7"}],"volume":94,"quality_controlled":"1","department":[{"_id":"MiLe"}],"date_published":"2016-07-01T00:00:00Z","publisher":"American Physical Society","publication_status":"published","abstract":[{"text":"Superconductivity in heavy-fermion systems has an unconventional nature and is considered to originate from the universal features of the electronic structure. Here, the Anderson lattice model is studied by means of the full variational Gutzwiller wave function incorporating nonlocal effects of the on-site interaction. We show that the d-wave superconducting ground state can be driven solely by interelectronic correlations. The proposed microscopic mechanism leads to a multigap superconductivity with the dominant contribution due to f electrons and in the dx2−y2-wave channel. Our results rationalize several important observations for CeCoIn5.","lang":"eng"}],"language":[{"iso":"eng"}],"publication":"Physical Review B - Condensed Matter and Materials Physics","title":"Correlation driven d wave superconductivity in Anderson lattice model: Two gaps","issue":"2","oa":1,"date_updated":"2021-01-12T06:50:12Z","scopus_import":1,"intvolume":"        94","type":"journal_article","status":"public","author":[{"full_name":"Wysokiński, Marcin","first_name":"Marcin","last_name":"Wysokiński"},{"orcid":"0000-0002-1629-3675","last_name":"Kaczmarczyk","id":"46C405DE-F248-11E8-B48F-1D18A9856A87","full_name":"Kaczmarczyk, Jan","first_name":"Jan"},{"first_name":"Jozef","full_name":"Spałek, Jozef","last_name":"Spałek"}],"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","oa_version":"Preprint","day":"01","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1510.00224"}],"month":"07"},{"title":"Interaction-driven Lifshitz transition with dipolar fermions in optical lattices","publist_id":"5791","citation":{"apa":"Van Loon, E., Katsnelson, M., Chomaz, L., &#38; Lemeshko, M. (2016). Interaction-driven Lifshitz transition with dipolar fermions in optical lattices. <i>Physical Review B - Condensed Matter and Materials Physics</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevB.93.195145\">https://doi.org/10.1103/PhysRevB.93.195145</a>","ista":"Van Loon E, Katsnelson M, Chomaz L, Lemeshko M. 2016. Interaction-driven Lifshitz transition with dipolar fermions in optical lattices. Physical Review B - Condensed Matter and Materials Physics. 93(19), 195145.","chicago":"Van Loon, Erik, Mikhail Katsnelson, Lauriane Chomaz, and Mikhail Lemeshko. “Interaction-Driven Lifshitz Transition with Dipolar Fermions in Optical Lattices.” <i>Physical Review B - Condensed Matter and Materials Physics</i>. American Physical Society, 2016. <a href=\"https://doi.org/10.1103/PhysRevB.93.195145\">https://doi.org/10.1103/PhysRevB.93.195145</a>.","mla":"Van Loon, Erik, et al. “Interaction-Driven Lifshitz Transition with Dipolar Fermions in Optical Lattices.” <i>Physical Review B - Condensed Matter and Materials Physics</i>, vol. 93, no. 19, 195145, American Physical Society, 2016, doi:<a href=\"https://doi.org/10.1103/PhysRevB.93.195145\">10.1103/PhysRevB.93.195145</a>.","ieee":"E. Van Loon, M. Katsnelson, L. Chomaz, and M. Lemeshko, “Interaction-driven Lifshitz transition with dipolar fermions in optical lattices,” <i>Physical Review B - Condensed Matter and Materials Physics</i>, vol. 93, no. 19. American Physical Society, 2016.","ama":"Van Loon E, Katsnelson M, Chomaz L, Lemeshko M. Interaction-driven Lifshitz transition with dipolar fermions in optical lattices. <i>Physical Review B - Condensed Matter and Materials Physics</i>. 2016;93(19). doi:<a href=\"https://doi.org/10.1103/PhysRevB.93.195145\">10.1103/PhysRevB.93.195145</a>","short":"E. Van Loon, M. Katsnelson, L. Chomaz, M. Lemeshko, Physical Review B - Condensed Matter and Materials Physics 93 (2016)."},"date_created":"2018-12-11T11:51:54Z","date_updated":"2021-01-12T06:50:36Z","oa":1,"issue":"19","year":"2016","intvolume":"        93","article_number":"195145","scopus_import":1,"_id":"1416","language":[{"iso":"eng"}],"doi":"10.1103/PhysRevB.93.195145","publication":"Physical Review B - Condensed Matter and Materials Physics","publication_status":"published","author":[{"first_name":"Erik","full_name":"Van Loon, Erik","last_name":"Van Loon"},{"last_name":"Katsnelson","first_name":"Mikhail","full_name":"Katsnelson, Mikhail"},{"last_name":"Chomaz","first_name":"Lauriane","full_name":"Chomaz, Lauriane"},{"full_name":"Lemeshko, Mikhail","first_name":"Mikhail","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","last_name":"Lemeshko","orcid":"0000-0002-6990-7802"}],"oa_version":"Preprint","main_file_link":[{"url":"http://arxiv.org/abs/1603.09358","open_access":"1"}],"day":"15","abstract":[{"text":"Anisotropic dipole-dipole interactions between ultracold dipolar fermions break the symmetry of the Fermi surface and thereby deform it. Here we demonstrate that such a Fermi surface deformation induces a topological phase transition - the so-called Lifshitz transition - in the regime accessible to present-day experiments. We describe the impact of the Lifshitz transition on observable quantities such as the Fermi surface topology, the density-density correlation function, and the excitation spectrum of the system. The Lifshitz transition in ultracold atoms can be controlled by tuning the dipole orientation and, in contrast to the transition studied in crystalline solids, is completely interaction driven.","lang":"eng"}],"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","month":"05","department":[{"_id":"MiLe"}],"volume":93,"quality_controlled":"1","publisher":"American Physical Society","type":"journal_article","date_published":"2016-05-15T00:00:00Z","status":"public"},{"date_created":"2018-12-11T11:51:55Z","title":"Gutzwiller wave function for finite systems: Superconductivity in the Hubbard model","publist_id":"5788","citation":{"short":"A. Tomski, J. Kaczmarczyk, Journal of Physics: Condensed Matter 28 (2016).","ama":"Tomski A, Kaczmarczyk J. Gutzwiller wave function for finite systems: Superconductivity in the Hubbard model. <i>Journal of Physics: Condensed Matter</i>. 2016;28(17). doi:<a href=\"https://doi.org/10.1088/0953-8984/28/17/175701\">10.1088/0953-8984/28/17/175701</a>","ieee":"A. Tomski and J. Kaczmarczyk, “Gutzwiller wave function for finite systems: Superconductivity in the Hubbard model,” <i>Journal of Physics: Condensed Matter</i>, vol. 28, no. 17. IOP Publishing Ltd., 2016.","chicago":"Tomski, Andrzej, and Jan Kaczmarczyk. “Gutzwiller Wave Function for Finite Systems: Superconductivity in the Hubbard Model.” <i>Journal of Physics: Condensed Matter</i>. IOP Publishing Ltd., 2016. <a href=\"https://doi.org/10.1088/0953-8984/28/17/175701\">https://doi.org/10.1088/0953-8984/28/17/175701</a>.","ista":"Tomski A, Kaczmarczyk J. 2016. Gutzwiller wave function for finite systems: Superconductivity in the Hubbard model. Journal of Physics: Condensed Matter. 28(17), 175701.","mla":"Tomski, Andrzej, and Jan Kaczmarczyk. “Gutzwiller Wave Function for Finite Systems: Superconductivity in the Hubbard Model.” <i>Journal of Physics: Condensed Matter</i>, vol. 28, no. 17, 175701, IOP Publishing Ltd., 2016, doi:<a href=\"https://doi.org/10.1088/0953-8984/28/17/175701\">10.1088/0953-8984/28/17/175701</a>.","apa":"Tomski, A., &#38; Kaczmarczyk, J. (2016). Gutzwiller wave function for finite systems: Superconductivity in the Hubbard model. <i>Journal of Physics: Condensed Matter</i>. IOP Publishing Ltd. <a href=\"https://doi.org/10.1088/0953-8984/28/17/175701\">https://doi.org/10.1088/0953-8984/28/17/175701</a>"},"date_updated":"2021-01-12T06:50:36Z","issue":"17","year":"2016","ec_funded":1,"article_number":"175701","intvolume":"        28","scopus_import":1,"_id":"1419","language":[{"iso":"eng"}],"doi":"10.1088/0953-8984/28/17/175701","publication":"Journal of Physics: Condensed Matter","publication_status":"published","author":[{"full_name":"Tomski, Andrzej","first_name":"Andrzej","last_name":"Tomski"},{"orcid":"0000-0002-1629-3675","last_name":"Kaczmarczyk","id":"46C405DE-F248-11E8-B48F-1D18A9856A87","first_name":"Jan","full_name":"Kaczmarczyk, Jan"}],"day":"29","oa_version":"None","abstract":[{"lang":"eng","text":"We study the superconducting phase of the Hubbard model using the Gutzwiller variational wave function (GWF) and the recently proposed diagrammatic expansion technique (DE-GWF). The DE-GWF method works on the level of the full GWF and in the thermodynamic limit. Here, we consider a finite-size system to study the accuracy of the results as a function of the system size (which is practically unrestricted). We show that the finite-size scaling used, e.g. in the variational Monte Carlo method can lead to significant, uncontrolled errors. The presented research is the first step towards applying the DE-GWF method in studies of inhomogeneous situations, including systems with impurities, defects, inhomogeneous phases, or disorder."}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","month":"03","project":[{"name":"International IST Postdoc Fellowship Programme","call_identifier":"FP7","grant_number":"291734","_id":"25681D80-B435-11E9-9278-68D0E5697425"}],"department":[{"_id":"MiLe"}],"quality_controlled":"1","volume":28,"publisher":"IOP Publishing Ltd.","type":"journal_article","date_published":"2016-03-29T00:00:00Z","status":"public"},{"_id":"1204","language":[{"iso":"eng"}],"publication":"American Mathematical Monthly","doi":"10.4169/amer.math.monthly.123.6.609","year":"2016","issue":"6","date_updated":"2021-01-12T06:49:04Z","oa":1,"title":"Surprises in numerical expressions of physical constants","date_created":"2018-12-11T11:50:42Z","citation":{"apa":"Amir, A., Lemeshko, M., &#38; Tokieda, T. (2016). Surprises in numerical expressions of physical constants. <i>American Mathematical Monthly</i>. Mathematical Association of America. <a href=\"https://doi.org/10.4169/amer.math.monthly.123.6.609\">https://doi.org/10.4169/amer.math.monthly.123.6.609</a>","mla":"Amir, Ariel, et al. “Surprises in Numerical Expressions of Physical Constants.” <i>American Mathematical Monthly</i>, vol. 123, no. 6, Mathematical Association of America, 2016, pp. 609–12, doi:<a href=\"https://doi.org/10.4169/amer.math.monthly.123.6.609\">10.4169/amer.math.monthly.123.6.609</a>.","ista":"Amir A, Lemeshko M, Tokieda T. 2016. Surprises in numerical expressions of physical constants. American Mathematical Monthly. 123(6), 609–612.","chicago":"Amir, Ariel, Mikhail Lemeshko, and Tadashi Tokieda. “Surprises in Numerical Expressions of Physical Constants.” <i>American Mathematical Monthly</i>. Mathematical Association of America, 2016. <a href=\"https://doi.org/10.4169/amer.math.monthly.123.6.609\">https://doi.org/10.4169/amer.math.monthly.123.6.609</a>.","short":"A. Amir, M. Lemeshko, T. Tokieda, American Mathematical Monthly 123 (2016) 609–612.","ama":"Amir A, Lemeshko M, Tokieda T. Surprises in numerical expressions of physical constants. <i>American Mathematical Monthly</i>. 2016;123(6):609-612. doi:<a href=\"https://doi.org/10.4169/amer.math.monthly.123.6.609\">10.4169/amer.math.monthly.123.6.609</a>","ieee":"A. Amir, M. Lemeshko, and T. Tokieda, “Surprises in numerical expressions of physical constants,” <i>American Mathematical Monthly</i>, vol. 123, no. 6. Mathematical Association of America, pp. 609–612, 2016."},"publist_id":"6143","scopus_import":1,"intvolume":"       123","status":"public","date_published":"2016-06-01T00:00:00Z","type":"journal_article","publisher":"Mathematical Association of America","volume":123,"quality_controlled":"1","department":[{"_id":"MiLe"}],"page":"609 - 612","author":[{"last_name":"Amir","full_name":"Amir, Ariel","first_name":"Ariel"},{"orcid":"0000-0002-6990-7802","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","last_name":"Lemeshko","full_name":"Lemeshko, Mikhail","first_name":"Mikhail"},{"first_name":"Tadashi","full_name":"Tokieda, Tadashi","last_name":"Tokieda"}],"publication_status":"published","month":"06","abstract":[{"text":"In science, as in life, &quot;surprises&quot; can be adequately appreciated only in the presence of a null model, what we expect a priori. In physics, theories sometimes express the values of dimensionless physical constants as combinations of mathematical constants like π or e. The inverse problem also arises, whereby the measured value of a physical constant admits a &quot;surprisingly&quot; simple approximation in terms of well-known mathematical constants. Can we estimate the probability for this to be a mere coincidence, rather than an inkling of some theory? We answer the question in the most naive form.","lang":"eng"}],"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","main_file_link":[{"url":"https://arxiv.org/abs/1603.00299","open_access":"1"}],"day":"01","oa_version":"Preprint"}]