[{"main_file_link":[{"url":"https://arxiv.org/abs/1606.03247","open_access":"1"}],"status":"public","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","type":"journal_article","date_published":"2017-01-13T00:00:00Z","publication_identifier":{"issn":["24699950"]},"publist_id":"6195","oa":1,"language":[{"iso":"eng"}],"publication":"Physical Review B - Condensed Matter and Materials Physics","project":[{"grant_number":"291734","name":"International IST Postdoc Fellowship Programme","call_identifier":"FP7","_id":"25681D80-B435-11E9-9278-68D0E5697425"}],"oa_version":"Submitted Version","article_number":"024506","month":"01","volume":95,"year":"2017","citation":{"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>","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>","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.","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>.","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>.","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."},"date_updated":"2023-09-20T11:25:56Z","external_id":{"isi":["000391852800006"]},"isi":1,"day":"13","doi":"10.1103/PhysRevB.95.024506","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."}],"quality_controlled":"1","ec_funded":1,"publisher":"American Physical Society","scopus_import":"1","_id":"1162","issue":"2","author":[{"first_name":"Jozef","last_name":"Spałek","full_name":"Spałek, Jozef"},{"full_name":"Zegrodnik, Michał","last_name":"Zegrodnik","first_name":"Michał"},{"last_name":"Kaczmarczyk","first_name":"Jan","full_name":"Kaczmarczyk, Jan","orcid":"0000-0002-1629-3675","id":"46C405DE-F248-11E8-B48F-1D18A9856A87"}],"department":[{"_id":"MiLe"}],"date_created":"2018-12-11T11:50:29Z","article_processing_charge":"No","publication_status":"published","intvolume":"        95","title":"Universal properties of high temperature superconductors from real space pairing t-J-U model and its quantitative comparison with experiment"},{"abstract":[{"lang":"eng","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."}],"doi":"10.1088/1361-648X/aa532f","day":"16","isi":1,"external_id":{"isi":["000393955500001"]},"date_updated":"2023-09-20T11:25:32Z","citation":{"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.","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>.","short":"M. Wysokiński, J. Kaczmarczyk, Journal of Physics: Condensed Matter 29 (2017).","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>.","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>","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>"},"year":"2017","volume":29,"title":"Unconventional superconductivity in generalized Hubbard model role of electron–hole symmetry breaking terms","intvolume":"        29","publication_status":"published","department":[{"_id":"MiLe"}],"date_created":"2018-12-11T11:50:29Z","article_processing_charge":"No","author":[{"last_name":"Wysokiński","first_name":"Marcin","full_name":"Wysokiński, Marcin"},{"id":"46C405DE-F248-11E8-B48F-1D18A9856A87","full_name":"Kaczmarczyk, Jan","orcid":"0000-0002-1629-3675","last_name":"Kaczmarczyk","first_name":"Jan"}],"issue":"8","_id":"1163","scopus_import":"1","publisher":"IOP Publishing Ltd.","quality_controlled":"1","ec_funded":1,"publist_id":"6194","publication_identifier":{"issn":["09538984"]},"date_published":"2017-01-16T00:00:00Z","type":"journal_article","status":"public","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","month":"01","article_number":"085604","oa_version":"None","project":[{"grant_number":"291734","name":"International IST Postdoc Fellowship Programme","_id":"25681D80-B435-11E9-9278-68D0E5697425","call_identifier":"FP7"}],"publication":"Journal of Physics: Condensed Matter","language":[{"iso":"eng"}]},{"language":[{"iso":"eng"}],"oa_version":"Preprint","month":"07","article_number":"023201","publication":"Physical Review Letters","main_file_link":[{"url":"https://arxiv.org/abs/1611.03701","open_access":"1"}],"status":"public","related_material":{"record":[{"id":"313","relation":"earlier_version","status":"public"}]},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publication_identifier":{"eissn":["1079-7114"],"issn":["0031-9007"]},"oa":1,"date_published":"2017-07-14T00:00:00Z","type":"journal_article","publisher":"American Physical Society","quality_controlled":"1","publication_status":"published","date_created":"2019-02-14T15:24:13Z","department":[{"_id":"MiLe"}],"title":"Experimental evidence for quantum tunneling time","intvolume":"       119","_id":"6013","scopus_import":1,"author":[{"first_name":"Nicolas","last_name":"Camus","full_name":"Camus, Nicolas"},{"id":"38CB71F6-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-5973-0874","full_name":"Yakaboylu, Enderalp","first_name":"Enderalp","last_name":"Yakaboylu"},{"last_name":"Fechner","first_name":"Lutz","full_name":"Fechner, Lutz"},{"last_name":"Klaiber","first_name":"Michael","full_name":"Klaiber, Michael"},{"full_name":"Laux, Martin","last_name":"Laux","first_name":"Martin"},{"first_name":"Yonghao","last_name":"Mi","full_name":"Mi, Yonghao"},{"last_name":"Hatsagortsyan","first_name":"Karen Z.","full_name":"Hatsagortsyan, Karen Z."},{"full_name":"Pfeifer, Thomas","first_name":"Thomas","last_name":"Pfeifer"},{"full_name":"Keitel, Christoph H.","last_name":"Keitel","first_name":"Christoph H."},{"first_name":"Robert","last_name":"Moshammer","full_name":"Moshammer, Robert"}],"issue":"2","volume":119,"arxiv":1,"doi":"10.1103/PhysRevLett.119.023201","day":"14","abstract":[{"text":"The first hundred attoseconds of the electron dynamics during strong field tunneling ionization are investigated. We quantify theoretically how the electron’s classical trajectories in the continuum emerge from the tunneling process and test the results with those achieved in parallel from attoclock measurements. An especially high sensitivity on the tunneling barrier is accomplished here by comparing the momentum distributions of two atomic species of slightly deviating atomic potentials (argon and krypton) being ionized under absolutely identical conditions with near-infrared laser pulses (1300 nm). The agreement between experiment and theory provides clear evidence for a nonzero tunneling time delay and a nonvanishing longitudinal momentum of the electron at the “tunnel exit.”","lang":"eng"}],"date_updated":"2023-02-23T11:13:36Z","citation":{"ista":"Camus N, Yakaboylu E, Fechner L, Klaiber M, Laux M, Mi Y, Hatsagortsyan KZ, Pfeifer T, Keitel CH, Moshammer R. 2017. Experimental evidence for quantum tunneling time. Physical Review Letters. 119(2), 023201.","short":"N. Camus, E. Yakaboylu, L. Fechner, M. Klaiber, M. Laux, Y. Mi, K.Z. Hatsagortsyan, T. Pfeifer, C.H. Keitel, R. Moshammer, Physical Review Letters 119 (2017).","mla":"Camus, Nicolas, et al. “Experimental Evidence for Quantum Tunneling Time.” <i>Physical Review Letters</i>, vol. 119, no. 2, 023201, American Physical Society, 2017, doi:<a href=\"https://doi.org/10.1103/PhysRevLett.119.023201\">10.1103/PhysRevLett.119.023201</a>.","chicago":"Camus, Nicolas, Enderalp Yakaboylu, Lutz Fechner, Michael Klaiber, Martin Laux, Yonghao Mi, Karen Z. Hatsagortsyan, Thomas Pfeifer, Christoph H. Keitel, and Robert Moshammer. “Experimental Evidence for Quantum Tunneling Time.” <i>Physical Review Letters</i>. American Physical Society, 2017. <a href=\"https://doi.org/10.1103/PhysRevLett.119.023201\">https://doi.org/10.1103/PhysRevLett.119.023201</a>.","ieee":"N. Camus <i>et al.</i>, “Experimental evidence for quantum tunneling time,” <i>Physical Review Letters</i>, vol. 119, no. 2. American Physical Society, 2017.","ama":"Camus N, Yakaboylu E, Fechner L, et al. Experimental evidence for quantum tunneling time. <i>Physical Review Letters</i>. 2017;119(2). doi:<a href=\"https://doi.org/10.1103/PhysRevLett.119.023201\">10.1103/PhysRevLett.119.023201</a>","apa":"Camus, N., Yakaboylu, E., Fechner, L., Klaiber, M., Laux, M., Mi, Y., … Moshammer, R. (2017). Experimental evidence for quantum tunneling time. <i>Physical Review Letters</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevLett.119.023201\">https://doi.org/10.1103/PhysRevLett.119.023201</a>"},"year":"2017","external_id":{"arxiv":["1611.03701"]}},{"volume":11,"year":"2017","citation":{"mla":"Lemeshko, Mikhail, and Richard Schmidt. “Molecular Impurities Interacting with a Many-Particle Environment: From Ultracold Gases to Helium Nanodroplets.” <i>Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero </i>, edited by Oliver Dulieu and Andreas Osterwalder, vol. 11, The Royal Society of Chemistry, 2017, pp. 444–95, doi:<a href=\"https://doi.org/10.1039/9781782626800-00444\">10.1039/9781782626800-00444</a>.","short":"M. Lemeshko, R. Schmidt, in:, O. Dulieu, A. Osterwalder (Eds.), Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero , The Royal Society of Chemistry, 2017, pp. 444–495.","ista":"Lemeshko M, Schmidt R. 2017.Molecular impurities interacting with a many-particle environment: From ultracold gases to helium nanodroplets. In: Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero . Theoretical and Computational Chemistry Series, vol. 11, 444–495.","ama":"Lemeshko M, Schmidt R. Molecular impurities interacting with a many-particle environment: From ultracold gases to helium nanodroplets. In: Dulieu O, Osterwalder A, eds. <i>Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero </i>. Vol 11. Theoretical and Computational Chemistry Series. The Royal Society of Chemistry; 2017:444-495. doi:<a href=\"https://doi.org/10.1039/9781782626800-00444\">10.1039/9781782626800-00444</a>","apa":"Lemeshko, M., &#38; Schmidt, R. (2017). Molecular impurities interacting with a many-particle environment: From ultracold gases to helium nanodroplets. In O. Dulieu &#38; A. Osterwalder (Eds.), <i>Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero </i> (Vol. 11, pp. 444–495). The Royal Society of Chemistry. <a href=\"https://doi.org/10.1039/9781782626800-00444\">https://doi.org/10.1039/9781782626800-00444</a>","ieee":"M. Lemeshko and R. Schmidt, “Molecular impurities interacting with a many-particle environment: From ultracold gases to helium nanodroplets,” in <i>Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero </i>, vol. 11, O. Dulieu and A. Osterwalder, Eds. The Royal Society of Chemistry, 2017, pp. 444–495.","chicago":"Lemeshko, Mikhail, and Richard Schmidt. “Molecular Impurities Interacting with a Many-Particle Environment: From Ultracold Gases to Helium Nanodroplets.” In <i>Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero </i>, edited by Oliver Dulieu and Andreas Osterwalder, 11:444–95. Theoretical and Computational Chemistry Series. The Royal Society of Chemistry, 2017. <a href=\"https://doi.org/10.1039/9781782626800-00444\">https://doi.org/10.1039/9781782626800-00444</a>."},"date_updated":"2021-01-12T08:05:50Z","day":"14","doi":"10.1039/9781782626800-00444","abstract":[{"lang":"eng","text":"In several settings of physics and chemistry one has to deal with molecules interacting with some kind of an external environment, be it a gas, a solution, or a crystal surface. Understanding molecular processes in the presence of such a many-particle bath is inherently challenging, and usually requires large-scale numerical computations. Here, we present an alternative approach to the problem, based on the notion of the angulon quasiparticle. We show that molecules rotating inside superfluid helium nanodroplets and Bose–Einstein condensates form angulons, and therefore can be described by straightforward solutions of a simple microscopic Hamiltonian. Casting the problem in the language of angulons allows us not only to greatly simplify it, but also to gain insights into the origins of the observed phenomena and to make predictions for future experimental studies."}],"series_title":"Theoretical and Computational Chemistry Series","quality_controlled":"1","page":"444 - 495","editor":[{"full_name":"Dulieu, Oliver","last_name":"Dulieu","first_name":"Oliver"},{"last_name":"Osterwalder","first_name":"Andreas","full_name":"Osterwalder, Andreas"}],"publisher":"The Royal Society of Chemistry","scopus_import":1,"_id":"604","author":[{"id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","first_name":"Mikhail","last_name":"Lemeshko","orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail"},{"last_name":"Schmidt","first_name":"Richard","full_name":"Schmidt, Richard"}],"department":[{"_id":"MiLe"}],"date_created":"2018-12-11T11:47:27Z","publication_status":"published","intvolume":"        11","title":"Molecular impurities interacting with a many-particle environment: From ultracold gases to helium nanodroplets","alternative_title":["Theoretical and Computational Chemistry Series"],"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1703.06753"}],"user_id":"4435EBFC-F248-11E8-B48F-1D18A9856A87","status":"public","type":"book_chapter","date_published":"2017-12-14T00:00:00Z","publication_identifier":{"issn":["20413181"]},"oa":1,"publist_id":"7201","language":[{"iso":"eng"}],"publication":"Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero ","oa_version":"Submitted Version","month":"12"},{"intvolume":"       119","title":"Waveguides with absorbing boundaries: Nonlinearity controlled by an exceptional point and solitons","department":[{"_id":"MiLe"}],"article_processing_charge":"No","date_created":"2018-12-11T11:49:18Z","publication_status":"published","issue":"3","author":[{"first_name":"Bikashkali","last_name":"Midya","full_name":"Midya, Bikashkali","id":"456187FC-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Konotop, Vladimir","first_name":"Vladimir","last_name":"Konotop"}],"scopus_import":"1","_id":"939","publisher":"American Physical Society","quality_controlled":"1","ec_funded":1,"abstract":[{"text":"We reveal the existence of continuous families of guided single-mode solitons in planar waveguides with weakly nonlinear active core and absorbing boundaries. Stable propagation of TE and TM-polarized solitons is accompanied by attenuation of all other modes, i.e., the waveguide features properties of conservative and dissipative systems. If the linear spectrum of the waveguide possesses exceptional points, which occurs in the case of TM polarization, an originally focusing (defocusing) material nonlinearity may become effectively defocusing (focusing). This occurs due to the geometric phase of the carried eigenmode when the surface impedance encircles the exceptional point. In its turn, the change of the effective nonlinearity ensures the existence of dark (bright) solitons in spite of focusing (defocusing) Kerr nonlinearity of the core. The existence of an exceptional point can also result in anomalous enhancement of the effective nonlinearity. In terms of practical applications, the nonlinearity of the reported waveguide can be manipulated by controlling the properties of the absorbing cladding.","lang":"eng"}],"day":"18","doi":"10.1103/PhysRevLett.119.033905","external_id":{"isi":["000405718200012"]},"isi":1,"citation":{"short":"B. Midya, V. Konotop, Physical Review Letters 119 (2017).","mla":"Midya, Bikashkali, and Vladimir Konotop. “Waveguides with Absorbing Boundaries: Nonlinearity Controlled by an Exceptional Point and Solitons.” <i>Physical Review Letters</i>, vol. 119, no. 3, 033905, American Physical Society, 2017, doi:<a href=\"https://doi.org/10.1103/PhysRevLett.119.033905\">10.1103/PhysRevLett.119.033905</a>.","ista":"Midya B, Konotop V. 2017. Waveguides with absorbing boundaries: Nonlinearity controlled by an exceptional point and solitons. Physical Review Letters. 119(3), 033905.","ama":"Midya B, Konotop V. Waveguides with absorbing boundaries: Nonlinearity controlled by an exceptional point and solitons. <i>Physical Review Letters</i>. 2017;119(3). doi:<a href=\"https://doi.org/10.1103/PhysRevLett.119.033905\">10.1103/PhysRevLett.119.033905</a>","apa":"Midya, B., &#38; Konotop, V. (2017). Waveguides with absorbing boundaries: Nonlinearity controlled by an exceptional point and solitons. <i>Physical Review Letters</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevLett.119.033905\">https://doi.org/10.1103/PhysRevLett.119.033905</a>","ieee":"B. Midya and V. Konotop, “Waveguides with absorbing boundaries: Nonlinearity controlled by an exceptional point and solitons,” <i>Physical Review Letters</i>, vol. 119, no. 3. American Physical Society, 2017.","chicago":"Midya, Bikashkali, and Vladimir Konotop. “Waveguides with Absorbing Boundaries: Nonlinearity Controlled by an Exceptional Point and Solitons.” <i>Physical Review Letters</i>. American Physical Society, 2017. <a href=\"https://doi.org/10.1103/PhysRevLett.119.033905\">https://doi.org/10.1103/PhysRevLett.119.033905</a>."},"year":"2017","date_updated":"2023-09-26T15:39:46Z","volume":119,"article_number":"033905","month":"07","project":[{"_id":"25681D80-B435-11E9-9278-68D0E5697425","call_identifier":"FP7","name":"International IST Postdoc Fellowship Programme","grant_number":"291734"}],"oa_version":"Submitted Version","publication":"Physical Review Letters","language":[{"iso":"eng"}],"publist_id":"6481","oa":1,"publication_identifier":{"issn":["00319007"]},"type":"journal_article","date_published":"2017-07-18T00:00:00Z","status":"public","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","main_file_link":[{"url":"https://arxiv.org/abs/1706.04085 ","open_access":"1"}]},{"publisher":"Nature Publishing Group","quality_controlled":"1","file_date_updated":"2018-12-12T10:12:32Z","publication_status":"published","date_created":"2018-12-11T11:49:42Z","department":[{"_id":"MiLe"}],"article_processing_charge":"No","pubrep_id":"809","title":"Vortices and antivortices in two-dimensional ultracold Fermi gases","intvolume":"         7","_id":"1015","scopus_import":"1","author":[{"full_name":"Bighin, Giacomo","orcid":"0000-0001-8823-9777","last_name":"Bighin","first_name":"Giacomo","id":"4CA96FD4-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Salasnich","first_name":"Luca","full_name":"Salasnich, Luca"}],"volume":7,"ddc":["539"],"doi":"10.1038/srep45702","day":"04","abstract":[{"lang":"eng","text":"Vortices are commonly observed in the context of classical hydrodynamics: from whirlpools after stirring the coffee in a cup to a violent atmospheric phenomenon such as a tornado, all classical vortices are characterized by an arbitrary circulation value of the local velocity field. On the other hand the appearance of vortices with quantized circulation represents one of the fundamental signatures of macroscopic quantum phenomena. In two-dimensional superfluids quantized vortices play a key role in determining finite-temperature properties, as the superfluid phase and the normal state are separated by a vortex unbinding transition, the Berezinskii-Kosterlitz-Thouless transition. Very recent experiments with two-dimensional superfluid fermions motivate the present work: we present theoretical results based on the renormalization group showing that the universal jump of the superfluid density and the critical temperature crucially depend on the interaction strength, providing a strong benchmark for forthcoming investigations."}],"date_updated":"2023-09-22T09:43:10Z","citation":{"short":"G. Bighin, L. Salasnich, Scientific Reports 7 (2017).","mla":"Bighin, Giacomo, and Luca Salasnich. “Vortices and Antivortices in Two-Dimensional Ultracold Fermi Gases.” <i>Scientific Reports</i>, vol. 7, 45702, Nature Publishing Group, 2017, doi:<a href=\"https://doi.org/10.1038/srep45702\">10.1038/srep45702</a>.","ista":"Bighin G, Salasnich L. 2017. Vortices and antivortices in two-dimensional ultracold Fermi gases. Scientific Reports. 7, 45702.","ama":"Bighin G, Salasnich L. Vortices and antivortices in two-dimensional ultracold Fermi gases. <i>Scientific Reports</i>. 2017;7. doi:<a href=\"https://doi.org/10.1038/srep45702\">10.1038/srep45702</a>","apa":"Bighin, G., &#38; Salasnich, L. (2017). Vortices and antivortices in two-dimensional ultracold Fermi gases. <i>Scientific Reports</i>. Nature Publishing Group. <a href=\"https://doi.org/10.1038/srep45702\">https://doi.org/10.1038/srep45702</a>","ieee":"G. Bighin and L. Salasnich, “Vortices and antivortices in two-dimensional ultracold Fermi gases,” <i>Scientific Reports</i>, vol. 7. Nature Publishing Group, 2017.","chicago":"Bighin, Giacomo, and Luca Salasnich. “Vortices and Antivortices in Two-Dimensional Ultracold Fermi Gases.” <i>Scientific Reports</i>. Nature Publishing Group, 2017. <a href=\"https://doi.org/10.1038/srep45702\">https://doi.org/10.1038/srep45702</a>."},"year":"2017","isi":1,"external_id":{"isi":["000398148100001"]},"language":[{"iso":"eng"}],"oa_version":"Published Version","month":"04","article_number":"45702","publication":"Scientific Reports","has_accepted_license":"1","file":[{"date_updated":"2018-12-12T10:12:32Z","file_name":"IST-2017-809-v1+1_srep45702.pdf","content_type":"application/pdf","date_created":"2018-12-12T10:12:32Z","file_size":478289,"file_id":"4950","creator":"system","access_level":"open_access","relation":"main_file"}],"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","status":"public","publication_identifier":{"issn":["20452322"]},"oa":1,"publist_id":"6380","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"date_published":"2017-04-04T00:00:00Z","type":"journal_article"},{"title":"Fingerprints of angulon instabilities in the spectra of matrix-isolated molecules","intvolume":"         1","publication_status":"published","date_created":"2018-12-11T11:49:35Z","department":[{"_id":"MiLe"}],"article_processing_charge":"No","author":[{"id":"339C7E5A-F248-11E8-B48F-1D18A9856A87","first_name":"Igor","last_name":"Cherepanov","full_name":"Cherepanov, Igor"},{"last_name":"Lemeshko","first_name":"Mikhail","full_name":"Lemeshko, Mikhail","orcid":"0000-0002-6990-7802","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87"}],"issue":"3","_id":"994","scopus_import":"1","publisher":"American Physical Society","ec_funded":1,"quality_controlled":"1","abstract":[{"text":"The formation of vortices is usually considered to be the main mechanism of angular momentum disposal in superfluids. Recently, it was predicted that a superfluid can acquire angular momentum via an alternative, microscopic route -- namely, through interaction with rotating impurities, forming so-called `angulon quasiparticles' [Phys. Rev. Lett. 114, 203001 (2015)]. The angulon instabilities correspond to transfer of a small number of angular momentum quanta from the impurity to the superfluid, as opposed to vortex instabilities, where angular momentum is quantized in units of ℏ  per atom. Furthermore, since conventional impurities (such as molecules) represent three-dimensional (3D) rotors, the angular momentum transferred is intrinsically 3D as well, as opposed to a merely planar rotation which is inherent to vortices. Herein we show that the angulon theory can explain the anomalous broadening of the spectroscopic lines observed for CH 3   and NH 3   molecules in superfluid helium nanodroplets, thereby providing a fingerprint of the emerging angulon instabilities in experiment.","lang":"eng"}],"doi":"10.1103/PhysRevMaterials.1.035602","day":"08","isi":1,"external_id":{"isi":["000416564000004"]},"date_updated":"2023-09-22T09:53:42Z","year":"2017","citation":{"chicago":"Cherepanov, Igor, and Mikhail Lemeshko. “Fingerprints of Angulon Instabilities in the Spectra of Matrix-Isolated Molecules.” <i>Physical Review Materials</i>. American Physical Society, 2017. <a href=\"https://doi.org/10.1103/PhysRevMaterials.1.035602\">https://doi.org/10.1103/PhysRevMaterials.1.035602</a>.","ieee":"I. Cherepanov and M. Lemeshko, “Fingerprints of angulon instabilities in the spectra of matrix-isolated molecules,” <i>Physical Review Materials</i>, vol. 1, no. 3. American Physical Society, 2017.","ama":"Cherepanov I, Lemeshko M. Fingerprints of angulon instabilities in the spectra of matrix-isolated molecules. <i>Physical Review Materials</i>. 2017;1(3). doi:<a href=\"https://doi.org/10.1103/PhysRevMaterials.1.035602\">10.1103/PhysRevMaterials.1.035602</a>","apa":"Cherepanov, I., &#38; Lemeshko, M. (2017). Fingerprints of angulon instabilities in the spectra of matrix-isolated molecules. <i>Physical Review Materials</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevMaterials.1.035602\">https://doi.org/10.1103/PhysRevMaterials.1.035602</a>","ista":"Cherepanov I, Lemeshko M. 2017. Fingerprints of angulon instabilities in the spectra of matrix-isolated molecules. Physical Review Materials. 1(3).","mla":"Cherepanov, Igor, and Mikhail Lemeshko. “Fingerprints of Angulon Instabilities in the Spectra of Matrix-Isolated Molecules.” <i>Physical Review Materials</i>, vol. 1, no. 3, American Physical Society, 2017, doi:<a href=\"https://doi.org/10.1103/PhysRevMaterials.1.035602\">10.1103/PhysRevMaterials.1.035602</a>.","short":"I. Cherepanov, M. Lemeshko, Physical Review Materials 1 (2017)."},"volume":1,"month":"08","oa_version":"Submitted Version","project":[{"name":"Quantum rotations in the presence of a many-body environment","grant_number":"P29902","call_identifier":"FWF","_id":"26031614-B435-11E9-9278-68D0E5697425"},{"call_identifier":"H2020","_id":"2564DBCA-B435-11E9-9278-68D0E5697425","name":"International IST Doctoral Program","grant_number":"665385"}],"publication":"Physical Review Materials","language":[{"iso":"eng"}],"oa":1,"publist_id":"6405","date_published":"2017-08-08T00:00:00Z","type":"journal_article","status":"public","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1705.09220"}]},{"intvolume":"        96","title":"Diagrammatic approach to orbital quantum impurities interacting with a many-particle environment","article_processing_charge":"No","department":[{"_id":"MiLe"}],"date_created":"2018-12-11T11:49:36Z","publication_status":"published","issue":"8","author":[{"last_name":"Bighin","first_name":"Giacomo","full_name":"Bighin, Giacomo","orcid":"0000-0001-8823-9777","id":"4CA96FD4-F248-11E8-B48F-1D18A9856A87"},{"id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","first_name":"Mikhail","last_name":"Lemeshko","orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail"}],"scopus_import":"1","_id":"995","publisher":"American Physical Society","quality_controlled":"1","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"}],"day":"07","doi":"10.1103/PhysRevB.96.085410","external_id":{"isi":["000407017100009"]},"isi":1,"year":"2017","citation":{"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>.","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>","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>","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.","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>.","short":"G. Bighin, M. Lemeshko, Physical Review B - Condensed Matter and Materials Physics 96 (2017)."},"date_updated":"2023-09-22T09:53:17Z","volume":96,"article_number":"085410","month":"08","project":[{"name":"Quantum rotations in the presence of a many-body environment","grant_number":"P29902","_id":"26031614-B435-11E9-9278-68D0E5697425","call_identifier":"FWF"}],"oa_version":"Submitted Version","publication":"Physical Review B - Condensed Matter and Materials Physics","language":[{"iso":"eng"}],"oa":1,"publist_id":"6404","publication_identifier":{"issn":["24699950"]},"type":"journal_article","date_published":"2017-08-07T00:00:00Z","status":"public","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","main_file_link":[{"url":"https://arxiv.org/abs/1704.02616","open_access":"1"}]},{"date_published":"2017-06-01T00:00:00Z","type":"journal_article","publication_identifier":{"issn":["00219606"]},"oa":1,"publist_id":"6403","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1704.03684"}],"status":"public","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publication":"The Journal of Chemical Physics","oa_version":"Submitted Version","month":"06","article_number":"013946","language":[{"iso":"eng"}],"date_updated":"2024-02-28T13:02:26Z","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>.","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>","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>","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)."},"year":"2017","isi":1,"external_id":{"isi":["000405089400047"]},"doi":"10.1063/1.4983703","day":"01","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. "}],"volume":147,"_id":"996","scopus_import":"1","author":[{"full_name":"Shepperson, Benjamin","last_name":"Shepperson","first_name":"Benjamin"},{"first_name":"Adam","last_name":"Chatterley","full_name":"Chatterley, Adam"},{"full_name":"Søndergaard, Anders","first_name":"Anders","last_name":"Søndergaard"},{"full_name":"Christiansen, Lars","first_name":"Lars","last_name":"Christiansen"},{"full_name":"Lemeshko, Mikhail","orcid":"0000-0002-6990-7802","last_name":"Lemeshko","first_name":"Mikhail","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Stapelfeldt","first_name":"Henrik","full_name":"Stapelfeldt, Henrik"}],"issue":"1","publication_status":"published","article_processing_charge":"No","department":[{"_id":"MiLe"}],"date_created":"2018-12-11T11:49:36Z","title":"Strongly aligned molecules inside helium droplets in the near-adiabatic regime","intvolume":"       147","quality_controlled":"1","publisher":"AIP Publishing"},{"publisher":"American Physical Society","article_type":"original","quality_controlled":"1","ec_funded":1,"article_processing_charge":"No","department":[{"_id":"MiLe"},{"_id":"RoSe"}],"date_created":"2018-12-11T11:49:36Z","publication_status":"published","intvolume":"       119","title":"Emergence of non-abelian magnetic monopoles in a quantum impurity problem","scopus_import":"1","_id":"997","issue":"23","author":[{"orcid":"0000-0001-5973-0874","full_name":"Yakaboylu, Enderalp","first_name":"Enderalp","last_name":"Yakaboylu","id":"38CB71F6-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Deuchert, Andreas","orcid":"0000-0003-3146-6746","last_name":"Deuchert","first_name":"Andreas","id":"4DA65CD0-F248-11E8-B48F-1D18A9856A87"},{"orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail","first_name":"Mikhail","last_name":"Lemeshko","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87"}],"volume":119,"day":"06","doi":"10.1103/PhysRevLett.119.235301","arxiv":1,"abstract":[{"lang":"eng","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."}],"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.","short":"E. Yakaboylu, A. Deuchert, M. Lemeshko, Physical Review Letters 119 (2017).","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>.","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.","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>.","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>","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>"},"year":"2017","date_updated":"2023-10-10T13:31:54Z","external_id":{"isi":["000417132100007"],"arxiv":["1705.05162"]},"isi":1,"language":[{"iso":"eng"}],"project":[{"name":"International IST Postdoc Fellowship Programme","grant_number":"291734","call_identifier":"FP7","_id":"25681D80-B435-11E9-9278-68D0E5697425"},{"_id":"25C6DC12-B435-11E9-9278-68D0E5697425","call_identifier":"H2020","grant_number":"694227","name":"Analysis of quantum many-body systems"},{"grant_number":"P29902","name":"Quantum rotations in the presence of a many-body environment","call_identifier":"FWF","_id":"26031614-B435-11E9-9278-68D0E5697425"}],"oa_version":"Preprint","article_number":"235301","month":"12","publication":"Physical Review Letters","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1705.05162"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","status":"public","publication_identifier":{"issn":["0031-9007"]},"oa":1,"publist_id":"6401","type":"journal_article","date_published":"2017-12-06T00:00:00Z"},{"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. ","volume":93,"date_updated":"2021-01-12T06:51:09Z","citation":{"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>","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.","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>.","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).","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."},"year":"2016","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."}],"doi":"10.1103/PhysRevA.93.032502","day":"07","quality_controlled":"1","ec_funded":1,"publisher":"American Physical Society","author":[{"first_name":"Pedro","last_name":"Amaro","full_name":"Amaro, Pedro"},{"full_name":"Fratini, Filippo","last_name":"Fratini","first_name":"Filippo"},{"last_name":"Safari","first_name":"Laleh","full_name":"Safari, Laleh","id":"3C325E5E-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Machado, Jorge","last_name":"Machado","first_name":"Jorge"},{"last_name":"Guerra","first_name":"Mauro","full_name":"Guerra, Mauro"},{"full_name":"Indelicato, Paul","first_name":"Paul","last_name":"Indelicato"},{"first_name":"José","last_name":"Santos","full_name":"Santos, José"}],"issue":"3","_id":"1496","scopus_import":1,"title":"Relativistic evaluation of the two-photon decay of the metastable 1s22s2p3P0 state in berylliumlike ions with an effective-potential model","intvolume":"        93","publication_status":"published","department":[{"_id":"MiLe"}],"date_created":"2018-12-11T11:52:21Z","status":"public","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","main_file_link":[{"url":"http://arxiv.org/abs/1508.06169","open_access":"1"}],"date_published":"2016-03-07T00:00:00Z","type":"journal_article","oa":1,"publist_id":"5683","language":[{"iso":"eng"}],"publication":"Physical Review A - Atomic, Molecular, and Optical Physics","month":"03","article_number":"032502","oa_version":"Preprint","project":[{"name":"International IST Postdoc Fellowship Programme","grant_number":"291734","_id":"25681D80-B435-11E9-9278-68D0E5697425","call_identifier":"FP7"}]},{"date_updated":"2021-01-12T06:50:01Z","year":"2016","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.","short":"J. Kaczmarczyk, H. Weimer, M. Lemeshko, New Journal of Physics 18 (2016).","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>.","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>","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>"},"doi":"10.1088/1367-2630/18/9/093042","day":"22","abstract":[{"lang":"eng","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."}],"volume":18,"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).","ddc":["530"],"_id":"1343","scopus_import":1,"author":[{"last_name":"Kaczmarczyk","first_name":"Jan","full_name":"Kaczmarczyk, Jan","orcid":"0000-0002-1629-3675","id":"46C405DE-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Weimer, Hendrik","first_name":"Hendrik","last_name":"Weimer"},{"first_name":"Mikhail","last_name":"Lemeshko","orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87"}],"issue":"9","publication_status":"published","date_created":"2018-12-11T11:51:29Z","department":[{"_id":"MiLe"}],"title":"Dissipative preparation of antiferromagnetic order in the Fermi-Hubbard model","pubrep_id":"655","intvolume":"        18","ec_funded":1,"quality_controlled":"1","file_date_updated":"2020-07-14T12:44:45Z","publisher":"IOP Publishing Ltd.","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"date_published":"2016-09-22T00:00:00Z","type":"journal_article","oa":1,"publist_id":"5909","file":[{"checksum":"2a43e235222755e31ffbd369882c61de","file_size":1076029,"date_created":"2018-12-12T10:17:52Z","file_name":"IST-2016-655-v1+1_njp_18_9_093042.pdf","content_type":"application/pdf","date_updated":"2020-07-14T12:44:45Z","access_level":"open_access","relation":"main_file","creator":"system","file_id":"5309"}],"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","status":"public","publication":"New Journal of Physics","has_accepted_license":"1","oa_version":"Published Version","project":[{"grant_number":"291734","name":"International IST Postdoc Fellowship Programme","call_identifier":"FP7","_id":"25681D80-B435-11E9-9278-68D0E5697425"}],"month":"09","article_number":"093042","language":[{"iso":"eng"}]},{"ddc":["530"],"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.","volume":6,"date_updated":"2021-01-12T06:50:03Z","year":"2016","citation":{"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>.","short":"R. Schmidt, M. Lemeshko, Physical Review X 6 (2016).","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>.","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.","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>","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>"},"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."}],"doi":"10.1103/PhysRevX.6.011012","day":"01","file_date_updated":"2020-07-14T12:44:45Z","quality_controlled":"1","publisher":"American Physical Society","author":[{"first_name":"Richard","last_name":"Schmidt","full_name":"Schmidt, Richard"},{"orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail","first_name":"Mikhail","last_name":"Lemeshko","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87"}],"issue":"1","_id":"1347","scopus_import":1,"title":"Deformation of a quantum many-particle system by a rotating impurity","pubrep_id":"652","intvolume":"         6","publication_status":"published","department":[{"_id":"MiLe"}],"date_created":"2018-12-11T11:51:30Z","status":"public","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","file":[{"access_level":"open_access","relation":"main_file","creator":"system","file_id":"5183","checksum":"6757a164d3c38905e05b2b5a188cb8ff","file_size":1165869,"date_created":"2018-12-12T10:15:59Z","file_name":"IST-2016-652-v1+1_PhysRevX.6.011012.pdf","content_type":"application/pdf","date_updated":"2020-07-14T12:44:45Z"}],"date_published":"2016-01-01T00:00:00Z","type":"journal_article","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"oa":1,"publist_id":"5902","language":[{"iso":"eng"}],"publication":"Physical Review X","has_accepted_license":"1","month":"01","article_number":"011012","oa_version":"Published Version"},{"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.","volume":94,"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"}],"day":"30","doi":"10.1103/PhysRevB.94.085152","citation":{"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>.","short":"J. Kaczmarczyk, T. Schickling, J. Bünemann, Physical Review B - Condensed Matter and Materials Physics 94 (2016).","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>.","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.","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>","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>"},"year":"2016","date_updated":"2021-01-12T06:50:05Z","publisher":"American Physical Society","quality_controlled":"1","ec_funded":1,"intvolume":"        94","title":"Coexistence of nematic order and superconductivity in the Hubbard model","date_created":"2018-12-11T11:51:32Z","department":[{"_id":"MiLe"}],"publication_status":"published","issue":"8","author":[{"id":"46C405DE-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-1629-3675","full_name":"Kaczmarczyk, Jan","first_name":"Jan","last_name":"Kaczmarczyk"},{"last_name":"Schickling","first_name":"Tobias","full_name":"Schickling, Tobias"},{"first_name":"Jörg","last_name":"Bünemann","full_name":"Bünemann, Jörg"}],"scopus_import":1,"_id":"1352","status":"public","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","main_file_link":[{"url":"http://arxiv.org/abs/1512.06688","open_access":"1"}],"oa":1,"publist_id":"5897","type":"journal_article","date_published":"2016-08-30T00:00:00Z","language":[{"iso":"eng"}],"article_number":"085152","month":"08","project":[{"grant_number":"291734","name":"International IST Postdoc Fellowship Programme","call_identifier":"FP7","_id":"25681D80-B435-11E9-9278-68D0E5697425"}],"oa_version":"Preprint","publication":"Physical Review B - Condensed Matter and Materials Physics"},{"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1510.00224"}],"status":"public","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","oa":1,"publist_id":"5844","date_published":"2016-07-01T00:00:00Z","type":"journal_article","language":[{"iso":"eng"}],"oa_version":"Preprint","project":[{"grant_number":"291734","name":"International IST Postdoc Fellowship Programme","call_identifier":"FP7","_id":"25681D80-B435-11E9-9278-68D0E5697425"}],"month":"07","article_number":"024517","publication":"Physical Review B - Condensed Matter and Materials Physics","volume":94,"acknowledgement":"The  work  has  been  supported  by  the  National Science  Center  (NCN)  under  the  Grant  MAESTRO,  No.\r\nDEC-2012/04/A/ST3/00342. ","doi":"10.1103/PhysRevB.94.024517","day":"01","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"}],"date_updated":"2021-01-12T06:50:12Z","citation":{"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.","short":"M. Wysokiński, J. Kaczmarczyk, J. Spałek, Physical Review B - Condensed Matter and Materials Physics 94 (2016).","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>.","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>","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>"},"year":"2016","publisher":"American Physical Society","ec_funded":1,"quality_controlled":"1","publication_status":"published","department":[{"_id":"MiLe"}],"date_created":"2018-12-11T11:51:37Z","title":"Correlation driven d wave superconductivity in Anderson lattice model: Two gaps","intvolume":"        94","_id":"1368","scopus_import":1,"author":[{"full_name":"Wysokiński, Marcin","last_name":"Wysokiński","first_name":"Marcin"},{"first_name":"Jan","last_name":"Kaczmarczyk","orcid":"0000-0002-1629-3675","full_name":"Kaczmarczyk, Jan","id":"46C405DE-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Jozef","last_name":"Spałek","full_name":"Spałek, Jozef"}],"issue":"2"},{"status":"public","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","volume":93,"main_file_link":[{"url":"http://arxiv.org/abs/1603.09358","open_access":"1"}],"abstract":[{"lang":"eng","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."}],"oa":1,"publist_id":"5791","doi":"10.1103/PhysRevB.93.195145","day":"15","date_published":"2016-05-15T00:00:00Z","type":"journal_article","date_updated":"2021-01-12T06:50:36Z","year":"2016","citation":{"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>","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>","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.","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>.","short":"E. Van Loon, M. Katsnelson, L. Chomaz, M. Lemeshko, Physical Review B - Condensed Matter and Materials Physics 93 (2016).","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."},"publisher":"American Physical Society","language":[{"iso":"eng"}],"quality_controlled":"1","title":"Interaction-driven Lifshitz transition with dipolar fermions in optical lattices","month":"05","intvolume":"        93","article_number":"195145","publication_status":"published","oa_version":"Preprint","date_created":"2018-12-11T11:51:54Z","department":[{"_id":"MiLe"}],"author":[{"last_name":"Van Loon","first_name":"Erik","full_name":"Van Loon, Erik"},{"first_name":"Mikhail","last_name":"Katsnelson","full_name":"Katsnelson, Mikhail"},{"full_name":"Chomaz, Lauriane","first_name":"Lauriane","last_name":"Chomaz"},{"orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail","first_name":"Mikhail","last_name":"Lemeshko","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87"}],"issue":"19","_id":"1416","publication":"Physical Review B - Condensed Matter and Materials Physics","scopus_import":1},{"quality_controlled":"1","ec_funded":1,"language":[{"iso":"eng"}],"publisher":"IOP Publishing Ltd.","scopus_import":1,"publication":"Journal of Physics: Condensed Matter","_id":"1419","issue":"17","author":[{"full_name":"Tomski, Andrzej","first_name":"Andrzej","last_name":"Tomski"},{"last_name":"Kaczmarczyk","first_name":"Jan","full_name":"Kaczmarczyk, Jan","orcid":"0000-0002-1629-3675","id":"46C405DE-F248-11E8-B48F-1D18A9856A87"}],"project":[{"_id":"25681D80-B435-11E9-9278-68D0E5697425","call_identifier":"FP7","name":"International IST Postdoc Fellowship Programme","grant_number":"291734"}],"date_created":"2018-12-11T11:51:55Z","department":[{"_id":"MiLe"}],"oa_version":"None","publication_status":"published","intvolume":"        28","article_number":"175701","month":"03","title":"Gutzwiller wave function for finite systems: Superconductivity in the Hubbard model","volume":28,"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","status":"public","year":"2016","citation":{"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>","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>","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>.","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.","short":"A. Tomski, J. Kaczmarczyk, Journal of Physics: Condensed Matter 28 (2016).","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>.","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."},"date_updated":"2021-01-12T06:50:36Z","type":"journal_article","date_published":"2016-03-29T00:00:00Z","day":"29","doi":"10.1088/0953-8984/28/17/175701","publist_id":"5788","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."}]},{"volume":123,"main_file_link":[{"url":"https://arxiv.org/abs/1603.00299","open_access":"1"}],"status":"public","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","doi":"10.4169/amer.math.monthly.123.6.609","day":"01","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"}],"oa":1,"publist_id":"6143","date_updated":"2021-01-12T06:49:04Z","year":"2016","citation":{"ista":"Amir A, Lemeshko M, Tokieda T. 2016. Surprises in numerical expressions of physical constants. American Mathematical Monthly. 123(6), 609–612.","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>.","short":"A. Amir, M. Lemeshko, T. Tokieda, American Mathematical Monthly 123 (2016) 609–612.","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.","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>.","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>","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>"},"date_published":"2016-06-01T00:00:00Z","type":"journal_article","publisher":"Mathematical Association of America","page":"609 - 612","quality_controlled":"1","language":[{"iso":"eng"}],"oa_version":"Preprint","publication_status":"published","date_created":"2018-12-11T11:50:42Z","department":[{"_id":"MiLe"}],"month":"06","title":"Surprises in numerical expressions of physical constants","intvolume":"       123","publication":"American Mathematical Monthly","_id":"1204","scopus_import":1,"author":[{"full_name":"Amir, Ariel","last_name":"Amir","first_name":"Ariel"},{"full_name":"Lemeshko, Mikhail","orcid":"0000-0002-6990-7802","last_name":"Lemeshko","first_name":"Mikhail","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Tokieda, Tadashi","first_name":"Tadashi","last_name":"Tokieda"}],"issue":"6"},{"publisher":"Wiley-Blackwell","page":"3649 - 3654","ec_funded":1,"quality_controlled":"1","title":"Libration of strongly oriented polar molecules inside a superfluid","intvolume":"        17","publication_status":"published","department":[{"_id":"JoFi"},{"_id":"MiLe"}],"date_created":"2018-12-11T11:50:43Z","author":[{"id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87","full_name":"Redchenko, Elena","last_name":"Redchenko","first_name":"Elena"},{"full_name":"Lemeshko, Mikhail","orcid":"0000-0002-6990-7802","last_name":"Lemeshko","first_name":"Mikhail","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87"}],"issue":"22","_id":"1206","scopus_import":1,"volume":17,"abstract":[{"lang":"eng","text":"We study a polar molecule immersed in a superfluid environment, such as a helium nanodroplet or a Bose–Einstein condensate, in the presence of a strong electrostatic field. We show that coupling of the molecular pendular motion, induced by the field, to the fluctuating bath leads to formation of pendulons—spherical harmonic librators dressed by a field of many-particle excitations. We study the behavior of the pendulon in a broad range of molecule–bath and molecule–field interaction strengths, and reveal that its spectrum features a series of instabilities which are absent in the field-free case of the angulon quasiparticle. Furthermore, we show that an external field allows to fine-tune the positions of these instabilities in the molecular rotational spectrum. This opens the door to detailed experimental studies of redistribution of orbital angular momentum in many-particle systems. © 2016 Wiley-VCH Verlag GmbH &amp; Co. KGaA, Weinheim"}],"doi":"10.1002/cphc.201601042","day":"18","date_updated":"2021-01-12T06:49:05Z","citation":{"ista":"Redchenko E, Lemeshko M. 2016. Libration of strongly oriented polar molecules inside a superfluid. ChemPhysChem. 17(22), 3649–3654.","mla":"Redchenko, Elena, and Mikhail Lemeshko. “Libration of Strongly Oriented Polar Molecules inside a Superfluid.” <i>ChemPhysChem</i>, vol. 17, no. 22, Wiley-Blackwell, 2016, pp. 3649–54, doi:<a href=\"https://doi.org/10.1002/cphc.201601042\">10.1002/cphc.201601042</a>.","short":"E. Redchenko, M. Lemeshko, ChemPhysChem 17 (2016) 3649–3654.","ieee":"E. Redchenko and M. Lemeshko, “Libration of strongly oriented polar molecules inside a superfluid,” <i>ChemPhysChem</i>, vol. 17, no. 22. Wiley-Blackwell, pp. 3649–3654, 2016.","chicago":"Redchenko, Elena, and Mikhail Lemeshko. “Libration of Strongly Oriented Polar Molecules inside a Superfluid.” <i>ChemPhysChem</i>. Wiley-Blackwell, 2016. <a href=\"https://doi.org/10.1002/cphc.201601042\">https://doi.org/10.1002/cphc.201601042</a>.","apa":"Redchenko, E., &#38; Lemeshko, M. (2016). Libration of strongly oriented polar molecules inside a superfluid. <i>ChemPhysChem</i>. Wiley-Blackwell. <a href=\"https://doi.org/10.1002/cphc.201601042\">https://doi.org/10.1002/cphc.201601042</a>","ama":"Redchenko E, Lemeshko M. Libration of strongly oriented polar molecules inside a superfluid. <i>ChemPhysChem</i>. 2016;17(22):3649-3654. doi:<a href=\"https://doi.org/10.1002/cphc.201601042\">10.1002/cphc.201601042</a>"},"year":"2016","language":[{"iso":"eng"}],"month":"09","oa_version":"Preprint","project":[{"_id":"2564DBCA-B435-11E9-9278-68D0E5697425","call_identifier":"H2020","name":"International IST Doctoral Program","grant_number":"665385"}],"publication":"ChemPhysChem","status":"public","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","main_file_link":[{"url":"https://arxiv.org/abs/1609.08161","open_access":"1"}],"publist_id":"6140","oa":1,"date_published":"2016-09-18T00:00:00Z","type":"journal_article"},{"title":"Rotation of cold molecular ions inside a Bose-Einstein condensate","intvolume":"        94","publication_status":"published","department":[{"_id":"MiLe"}],"date_created":"2018-12-11T11:51:09Z","author":[{"full_name":"Midya, Bikashkali","first_name":"Bikashkali","last_name":"Midya","id":"456187FC-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Tomza, Michał","first_name":"Michał","last_name":"Tomza"},{"full_name":"Schmidt, Richard","last_name":"Schmidt","first_name":"Richard"},{"orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail","first_name":"Mikhail","last_name":"Lemeshko","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87"}],"issue":"4","_id":"1286","scopus_import":1,"publisher":"American Physical Society","ec_funded":1,"quality_controlled":"1","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."}],"doi":"10.1103/PhysRevA.94.041601","day":"13","date_updated":"2021-01-12T06:49:37Z","year":"2016","citation":{"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>.","short":"B. Midya, M. Tomza, R. Schmidt, M. Lemeshko, Physical Review A - Atomic, Molecular, and Optical Physics 94 (2016).","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.","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>.","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>","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>"},"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.","volume":94,"month":"10","article_number":"041601","oa_version":"Preprint","project":[{"name":"International IST Postdoc Fellowship Programme","grant_number":"291734","_id":"25681D80-B435-11E9-9278-68D0E5697425","call_identifier":"FP7"}],"publication":"Physical Review A - Atomic, Molecular, and Optical Physics","language":[{"iso":"eng"}],"publist_id":"6030","oa":1,"date_published":"2016-10-13T00:00:00Z","type":"journal_article","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","status":"public","main_file_link":[{"url":"https://arxiv.org/abs/1607.06092","open_access":"1"}]}]