[{"date_created":"2023-09-14T13:08:23Z","file":[{"relation":"main_file","content_type":"application/pdf","creator":"dernst","file_id":"14350","success":1,"access_level":"open_access","date_updated":"2023-09-20T10:46:10Z","file_size":4866506,"file_name":"2023_SciPostPhysics_Brighi.pdf","checksum":"4cef6a8021f6b6c47ab2f2f2b1387ac2","date_created":"2023-09-20T10:46:10Z"}],"department":[{"_id":"MaSe"}],"has_accepted_license":"1","language":[{"iso":"eng"}],"publisher":"SciPost Foundation","article_type":"original","date_published":"2023-09-13T00:00:00Z","month":"09","file_date_updated":"2023-09-20T10:46:10Z","publication":"SciPost Physics","issue":"3","status":"public","intvolume":"        15","type":"journal_article","day":"13","ddc":["530"],"related_material":{"record":[{"status":"public","relation":"earlier_version","id":"12750"}]},"article_number":"093","tmp":{"image":"/images/cc_by.png","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"external_id":{"arxiv":["2210.15607"]},"title":"Hilbert space fragmentation and slow dynamics in particle-conserving quantum East models","ec_funded":1,"doi":"10.21468/scipostphys.15.3.093","year":"2023","oa_version":"Published Version","quality_controlled":"1","project":[{"name":"Non-Ergodic Quantum Matter: Universality, Dynamics and Control","_id":"23841C26-32DE-11EA-91FC-C7463DDC885E","call_identifier":"H2020","grant_number":"850899"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","acknowledgement":"We would like to thank Raimel A. Medina, Hansveer Singh, and Dmitry Abanin for useful\r\ndiscussions.The authors acknowledge support by the European Research Council\r\n(ERC) under the European Union’s Horizon 2020 research and innovation program (Grant\r\nAgreement No. 850899). We acknowledge support by the Erwin Schrödinger International\r\nInstitute for Mathematics and Physics (ESI).","publication_identifier":{"issn":["2542-4653"]},"_id":"14334","article_processing_charge":"No","oa":1,"volume":15,"date_updated":"2023-09-20T10:46:29Z","arxiv":1,"keyword":["General Physics and Astronomy"],"author":[{"orcid":"0000-0002-7969-2729","full_name":"Brighi, Pietro","last_name":"Brighi","first_name":"Pietro","id":"4115AF5C-F248-11E8-B48F-1D18A9856A87"},{"id":"F75EE9BE-5C90-11EA-905D-16643DDC885E","orcid":"0000-0003-0038-7068","last_name":"Ljubotina","full_name":"Ljubotina, Marko","first_name":"Marko"},{"last_name":"Serbyn","full_name":"Serbyn, Maksym","orcid":"0000-0002-2399-5827","first_name":"Maksym","id":"47809E7E-F248-11E8-B48F-1D18A9856A87"}],"abstract":[{"text":"Quantum kinetically constrained models have recently attracted significant attention due to their anomalous dynamics and thermalization. In this work, we introduce a hitherto unexplored family of kinetically constrained models featuring conserved particle number and strong inversion-symmetry breaking due to facilitated hopping. We demonstrate that these models provide a generic example of so-called quantum Hilbert space fragmentation, that is manifested in disconnected sectors in the Hilbert space that are not apparent in the computational basis. Quantum Hilbert space fragmentation leads to an exponential in system size number of eigenstates with exactly zero entanglement entropy across several bipartite cuts. These eigenstates can be probed dynamically using quenches from simple initial product states. In addition, we study the particle spreading under unitary dynamics launched from the domain wall state, and find faster than diffusive dynamics at high particle densities, that crosses over into logarithmically slow relaxation at smaller densities. Using a classically simulable cellular automaton, we reproduce the logarithmic dynamics observed in the quantum case. Our work suggests that particle conserving constrained models with inversion symmetry breaking realize so far unexplored dynamical behavior and invite their further theoretical and experimental studies.","lang":"eng"}],"citation":{"apa":"Brighi, P., Ljubotina, M., &#38; Serbyn, M. (2023). Hilbert space fragmentation and slow dynamics in particle-conserving quantum East models. <i>SciPost Physics</i>. SciPost Foundation. <a href=\"https://doi.org/10.21468/scipostphys.15.3.093\">https://doi.org/10.21468/scipostphys.15.3.093</a>","ieee":"P. Brighi, M. Ljubotina, and M. Serbyn, “Hilbert space fragmentation and slow dynamics in particle-conserving quantum East models,” <i>SciPost Physics</i>, vol. 15, no. 3. SciPost Foundation, 2023.","chicago":"Brighi, Pietro, Marko Ljubotina, and Maksym Serbyn. “Hilbert Space Fragmentation and Slow Dynamics in Particle-Conserving Quantum East Models.” <i>SciPost Physics</i>. SciPost Foundation, 2023. <a href=\"https://doi.org/10.21468/scipostphys.15.3.093\">https://doi.org/10.21468/scipostphys.15.3.093</a>.","ama":"Brighi P, Ljubotina M, Serbyn M. Hilbert space fragmentation and slow dynamics in particle-conserving quantum East models. <i>SciPost Physics</i>. 2023;15(3). doi:<a href=\"https://doi.org/10.21468/scipostphys.15.3.093\">10.21468/scipostphys.15.3.093</a>","mla":"Brighi, Pietro, et al. “Hilbert Space Fragmentation and Slow Dynamics in Particle-Conserving Quantum East Models.” <i>SciPost Physics</i>, vol. 15, no. 3, 093, SciPost Foundation, 2023, doi:<a href=\"https://doi.org/10.21468/scipostphys.15.3.093\">10.21468/scipostphys.15.3.093</a>.","ista":"Brighi P, Ljubotina M, Serbyn M. 2023. Hilbert space fragmentation and slow dynamics in particle-conserving quantum East models. SciPost Physics. 15(3), 093.","short":"P. Brighi, M. Ljubotina, M. Serbyn, SciPost Physics 15 (2023)."},"publication_status":"published"},{"external_id":{"arxiv":["2305.17969"]},"title":"Non-equilibrium dynamics of dipolar polarons","ec_funded":1,"doi":"10.21468/scipostphys.15.6.232","year":"2023","ddc":["530"],"article_number":"232","tmp":{"image":"/images/cc_by.png","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"author":[{"orcid":"0000-0003-0393-5525","full_name":"Volosniev, Artem","last_name":"Volosniev","first_name":"Artem","id":"37D278BC-F248-11E8-B48F-1D18A9856A87"},{"id":"4CA96FD4-F248-11E8-B48F-1D18A9856A87","last_name":"Bighin","full_name":"Bighin, Giacomo","orcid":"0000-0001-8823-9777","first_name":"Giacomo"},{"full_name":"Santos, Luis","last_name":"Santos","first_name":"Luis"},{"full_name":"Peña Ardila, Luisllu A.","last_name":"Peña Ardila","first_name":"Luisllu A."}],"keyword":["General Physics and Astronomy"],"abstract":[{"lang":"eng","text":"We study the out-of-equilibrium quantum dynamics of dipolar polarons, i.e., impurities immersed in a dipolar Bose-Einstein condensate, after a quench of the impurity-boson interaction. We show that the dipolar nature of the condensate and of the impurity results in anisotropic relaxation dynamics, in particular, anisotropic dressing of the polaron. More relevantly for cold-atom setups, quench dynamics is strongly affected by the interplay between dipolar anisotropy and trap geometry. Our findings pave the way for simulating impurities in anisotropic media utilizing experiments with dipolar mixtures."}],"citation":{"short":"A. Volosniev, G. Bighin, L. Santos, L.A. Peña Ardila, SciPost Physics 15 (2023).","ista":"Volosniev A, Bighin G, Santos L, Peña Ardila LA. 2023. Non-equilibrium dynamics of dipolar polarons. SciPost Physics. 15(6), 232.","ama":"Volosniev A, Bighin G, Santos L, Peña Ardila LA. Non-equilibrium dynamics of dipolar polarons. <i>SciPost Physics</i>. 2023;15(6). doi:<a href=\"https://doi.org/10.21468/scipostphys.15.6.232\">10.21468/scipostphys.15.6.232</a>","mla":"Volosniev, Artem, et al. “Non-Equilibrium Dynamics of Dipolar Polarons.” <i>SciPost Physics</i>, vol. 15, no. 6, 232, SciPost Foundation, 2023, doi:<a href=\"https://doi.org/10.21468/scipostphys.15.6.232\">10.21468/scipostphys.15.6.232</a>.","chicago":"Volosniev, Artem, Giacomo Bighin, Luis Santos, and Luisllu A. Peña Ardila. “Non-Equilibrium Dynamics of Dipolar Polarons.” <i>SciPost Physics</i>. SciPost Foundation, 2023. <a href=\"https://doi.org/10.21468/scipostphys.15.6.232\">https://doi.org/10.21468/scipostphys.15.6.232</a>.","apa":"Volosniev, A., Bighin, G., Santos, L., &#38; Peña Ardila, L. A. (2023). Non-equilibrium dynamics of dipolar polarons. <i>SciPost Physics</i>. SciPost Foundation. <a href=\"https://doi.org/10.21468/scipostphys.15.6.232\">https://doi.org/10.21468/scipostphys.15.6.232</a>","ieee":"A. Volosniev, G. Bighin, L. Santos, and L. A. Peña Ardila, “Non-equilibrium dynamics of dipolar polarons,” <i>SciPost Physics</i>, vol. 15, no. 6. SciPost Foundation, 2023."},"publication_status":"published","oa_version":"Published Version","quality_controlled":"1","project":[{"grant_number":"M02641","call_identifier":"FWF","_id":"26986C82-B435-11E9-9278-68D0E5697425","name":"A path-integral approach to composite impurities"},{"grant_number":"754411","_id":"260C2330-B435-11E9-9278-68D0E5697425","name":"ISTplus - Postdoctoral Fellowships","call_identifier":"H2020"}],"acknowledgement":"We thank Lauriane Chomaz for useful discussions and comments on the manuscript. We also\r\nthank Ragheed Al Hyder for comments on the manuscript.\r\nG.B. acknowledges support from the Austrian Science Fund (FWF),\r\nunder Project No. M2641-N27. This work is supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy EXC2181/1-\r\n390900948 (the Heidelberg STRUCTURES Excellence Cluster). A. G. V. acknowledges support from the European Union’s Horizon 2020 research and innovation programme under the\r\nMarie Skłodowska-Curie Grant Agreement No. 754411. L.A.P.A acknowledges by the PNRR\r\nMUR project PE0000023 - NQSTI and the Deutsche Forschungsgemeinschaft (DFG, German\r\nResearch Foundation) under Germany’s Excellence Strategy - EXC - 2123 Quantum Frontiers390837967 and FOR2247.","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publication_identifier":{"issn":["2542-4653"]},"_id":"14650","article_processing_charge":"No","volume":15,"oa":1,"date_updated":"2024-08-07T07:16:53Z","arxiv":1,"language":[{"iso":"eng"}],"publisher":"SciPost Foundation","article_type":"original","date_published":"2023-12-07T00:00:00Z","month":"12","date_created":"2023-12-10T13:03:07Z","file":[{"access_level":"open_access","date_updated":"2023-12-11T07:42:04Z","file_size":3543541,"file_name":"2023_SciPostPhysics_Volosniev.pdf","checksum":"e664372a1fe9d628a9bb1d135ebab7d8","date_created":"2023-12-11T07:42:04Z","relation":"main_file","content_type":"application/pdf","file_id":"14669","creator":"dernst","success":1}],"department":[{"_id":"MiLe"}],"has_accepted_license":"1","status":"public","intvolume":"        15","type":"journal_article","day":"07","file_date_updated":"2023-12-11T07:42:04Z","publication":"SciPost Physics","issue":"6"},{"publication_status":"published","citation":{"short":"L. Rammelmüller, D. Huber, M. Čufar, J. Brand, H.-W. Hammer, A. Volosniev, SciPost Physics 14 (2023).","ista":"Rammelmüller L, Huber D, Čufar M, Brand J, Hammer H-W, Volosniev A. 2023. Magnetic impurity in a one-dimensional few-fermion system. SciPost Physics. 14(1), 006.","ama":"Rammelmüller L, Huber D, Čufar M, Brand J, Hammer H-W, Volosniev A. Magnetic impurity in a one-dimensional few-fermion system. <i>SciPost Physics</i>. 2023;14(1). doi:<a href=\"https://doi.org/10.21468/scipostphys.14.1.006\">10.21468/scipostphys.14.1.006</a>","mla":"Rammelmüller, Lukas, et al. “Magnetic Impurity in a One-Dimensional Few-Fermion System.” <i>SciPost Physics</i>, vol. 14, no. 1, 006, SciPost Foundation, 2023, doi:<a href=\"https://doi.org/10.21468/scipostphys.14.1.006\">10.21468/scipostphys.14.1.006</a>.","chicago":"Rammelmüller, Lukas, David Huber, Matija Čufar, Joachim Brand, Hans-Werner Hammer, and Artem Volosniev. “Magnetic Impurity in a One-Dimensional Few-Fermion System.” <i>SciPost Physics</i>. SciPost Foundation, 2023. <a href=\"https://doi.org/10.21468/scipostphys.14.1.006\">https://doi.org/10.21468/scipostphys.14.1.006</a>.","ieee":"L. Rammelmüller, D. Huber, M. Čufar, J. Brand, H.-W. Hammer, and A. Volosniev, “Magnetic impurity in a one-dimensional few-fermion system,” <i>SciPost Physics</i>, vol. 14, no. 1. SciPost Foundation, 2023.","apa":"Rammelmüller, L., Huber, D., Čufar, M., Brand, J., Hammer, H.-W., &#38; Volosniev, A. (2023). Magnetic impurity in a one-dimensional few-fermion system. <i>SciPost Physics</i>. SciPost Foundation. <a href=\"https://doi.org/10.21468/scipostphys.14.1.006\">https://doi.org/10.21468/scipostphys.14.1.006</a>"},"author":[{"first_name":"Lukas","full_name":"Rammelmüller, Lukas","last_name":"Rammelmüller"},{"last_name":"Huber","full_name":"Huber, David","first_name":"David"},{"first_name":"Matija","full_name":"Čufar, Matija","last_name":"Čufar"},{"first_name":"Joachim","full_name":"Brand, Joachim","last_name":"Brand"},{"first_name":"Hans-Werner","last_name":"Hammer","full_name":"Hammer, Hans-Werner"},{"id":"37D278BC-F248-11E8-B48F-1D18A9856A87","first_name":"Artem","orcid":"0000-0003-0393-5525","full_name":"Volosniev, Artem","last_name":"Volosniev"}],"keyword":["General Physics and Astronomy"],"abstract":[{"text":"We present a numerical analysis of spin-1/2 fermions in a one-dimensional harmonic potential in the presence of a magnetic point-like impurity at the center of the trap. The model represents a few-body analogue of a magnetic impurity in the vicinity of an s-wave superconductor. Already for a few particles we find a ground-state level crossing between sectors with different fermion parities. We interpret this crossing as a few-body precursor of a quantum phase transition, which occurs when the impurity \"breaks\" a Cooper pair. This picture is further corroborated by analyzing density-density correlations in momentum space. Finally, we discuss how the system may be realized with existing cold-atoms platforms.","lang":"eng"}],"date_updated":"2023-12-13T11:39:32Z","volume":14,"oa":1,"article_processing_charge":"No","arxiv":1,"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","quality_controlled":"1","oa_version":"Published Version","_id":"13278","publication_identifier":{"issn":["2542-4653"]},"year":"2023","doi":"10.21468/scipostphys.14.1.006","title":"Magnetic impurity in a one-dimensional few-fermion system","external_id":{"arxiv":["2204.01606"],"isi":["001000325800008"]},"isi":1,"article_number":"006","tmp":{"image":"/images/cc_by.png","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"ddc":["530"],"type":"journal_article","day":"24","status":"public","intvolume":"        14","file_date_updated":"2023-07-31T08:44:38Z","issue":"1","publication":"SciPost Physics","article_type":"original","date_published":"2023-01-24T00:00:00Z","month":"01","language":[{"iso":"eng"}],"publisher":"SciPost Foundation","scopus_import":"1","department":[{"_id":"MiLe"}],"has_accepted_license":"1","file":[{"file_id":"13328","creator":"dernst","content_type":"application/pdf","relation":"main_file","success":1,"date_updated":"2023-07-31T08:44:38Z","access_level":"open_access","date_created":"2023-07-31T08:44:38Z","checksum":"ffdb70b9ae7aa45ea4ea6096ecbd6431","file_name":"2023_SciPostPhysics_Rammelmueller.pdf","file_size":1163444}],"date_created":"2023-07-24T10:48:23Z"},{"year":"2021","doi":"10.21468/scipostphys.10.2.025","ec_funded":1,"title":"Shape of a sound wave in a weakly-perturbed Bose gas","external_id":{"isi":["000646783100027"],"arxiv":["2004.08075"]},"tmp":{"image":"/images/cc_by.png","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"article_number":"025","isi":1,"ddc":["530"],"publication_status":"published","citation":{"apa":"Marchukov, O., &#38; Volosniev, A. (2021). Shape of a sound wave in a weakly-perturbed Bose gas. <i>SciPost Physics</i>. SciPost Foundation. <a href=\"https://doi.org/10.21468/scipostphys.10.2.025\">https://doi.org/10.21468/scipostphys.10.2.025</a>","ieee":"O. Marchukov and A. Volosniev, “Shape of a sound wave in a weakly-perturbed Bose gas,” <i>SciPost Physics</i>, vol. 10, no. 2. SciPost Foundation, 2021.","chicago":"Marchukov, Oleksandr, and Artem Volosniev. “Shape of a Sound Wave in a Weakly-Perturbed Bose Gas.” <i>SciPost Physics</i>. SciPost Foundation, 2021. <a href=\"https://doi.org/10.21468/scipostphys.10.2.025\">https://doi.org/10.21468/scipostphys.10.2.025</a>.","ama":"Marchukov O, Volosniev A. Shape of a sound wave in a weakly-perturbed Bose gas. <i>SciPost Physics</i>. 2021;10(2). doi:<a href=\"https://doi.org/10.21468/scipostphys.10.2.025\">10.21468/scipostphys.10.2.025</a>","mla":"Marchukov, Oleksandr, and Artem Volosniev. “Shape of a Sound Wave in a Weakly-Perturbed Bose Gas.” <i>SciPost Physics</i>, vol. 10, no. 2, 025, SciPost Foundation, 2021, doi:<a href=\"https://doi.org/10.21468/scipostphys.10.2.025\">10.21468/scipostphys.10.2.025</a>.","ista":"Marchukov O, Volosniev A. 2021. Shape of a sound wave in a weakly-perturbed Bose gas. SciPost Physics. 10(2), 025.","short":"O. Marchukov, A. Volosniev, SciPost Physics 10 (2021)."},"abstract":[{"lang":"eng","text":"We employ the Gross-Pitaevskii equation to study acoustic emission generated in a uniform Bose gas by a static impurity. The impurity excites a sound-wave packet, which propagates through the gas. We calculate the shape of this wave packet in the limit of long wave lengths, and argue that it is possible to extract properties of the impurity by observing this shape. We illustrate here this possibility for a Bose gas with a trapped impurity atom -- an example of a relevant experimental setup. Presented results are general for all one-dimensional systems described by the nonlinear Schrödinger equation and can also be used in nonatomic systems, e.g., to analyze light propagation in nonlinear optical media. Finally, we calculate the shape of the sound-wave packet for a three-dimensional Bose gas assuming a spherically symmetric perturbation."}],"author":[{"first_name":"Oleksandr","full_name":"Marchukov, Oleksandr","last_name":"Marchukov"},{"orcid":"0000-0003-0393-5525","last_name":"Volosniev","full_name":"Volosniev, Artem","first_name":"Artem","id":"37D278BC-F248-11E8-B48F-1D18A9856A87"}],"arxiv":1,"volume":10,"date_updated":"2023-08-07T13:39:37Z","oa":1,"article_processing_charge":"No","_id":"9093","publication_identifier":{"issn":["2542-4653"]},"acknowledgement":"We acknowledge fruitful discussions with Dr. Simos Mistakidis regarding beyond mean-field\r\neffects in our system. We also thank Prof. Maxim Olshanii for valuable suggestions to improve\r\nthe manuscript.O.V.M acknowledges the support from the National Science Foundation\r\nthrough grants No. PHY-1402249, No. PHY-1607221, and No. PHY-1912542 and the\r\nBinational (US-Israel) Science Foundation through grant No. 2015616, as well as by the Israel\r\nScience Foundation (grant No. 1287/17) and from the German Aeronautics and Space Administration\r\n(DLR) through Grant No. 50WM1957. This work has also received funding from\r\nthe DFG Project No.413495248 [VO 2437/1-1] and European Union’s Horizon 2020 research\r\nand innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 754411\r\n(A. G. V.)","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","project":[{"grant_number":"754411","name":"ISTplus - Postdoctoral Fellowships","_id":"260C2330-B435-11E9-9278-68D0E5697425","call_identifier":"H2020"}],"oa_version":"Published Version","quality_controlled":"1","month":"02","article_type":"original","date_published":"2021-02-03T00:00:00Z","publisher":"SciPost Foundation","language":[{"iso":"eng"}],"has_accepted_license":"1","department":[{"_id":"MiLe"}],"date_created":"2021-02-04T12:39:24Z","file":[{"creator":"dernst","file_id":"9105","content_type":"application/pdf","relation":"main_file","success":1,"date_updated":"2021-02-09T07:06:22Z","access_level":"open_access","date_created":"2021-02-09T07:06:22Z","checksum":"9fd614b7ab49999e7267874df2582f7e","file_name":"2021_SciPostPhysics_Marchukov.pdf","file_size":666512}],"day":"03","type":"journal_article","intvolume":"        10","status":"public","issue":"2","publication":"SciPost Physics","file_date_updated":"2021-02-09T07:06:22Z"},{"publication_status":"published","citation":{"short":"S. De Nicola, SciPost Physics 11 (2021).","ista":"De Nicola S. 2021. Importance sampling scheme for the stochastic simulation of quantum spin dynamics. SciPost Physics. 11(3), 048.","mla":"De Nicola, Stefano. “Importance Sampling Scheme for the Stochastic Simulation of Quantum Spin Dynamics.” <i>SciPost Physics</i>, vol. 11, no. 3, 048, SciPost, 2021, doi:<a href=\"https://doi.org/10.21468/scipostphys.11.3.048\">10.21468/scipostphys.11.3.048</a>.","ama":"De Nicola S. Importance sampling scheme for the stochastic simulation of quantum spin dynamics. <i>SciPost Physics</i>. 2021;11(3). doi:<a href=\"https://doi.org/10.21468/scipostphys.11.3.048\">10.21468/scipostphys.11.3.048</a>","chicago":"De Nicola, Stefano. “Importance Sampling Scheme for the Stochastic Simulation of Quantum Spin Dynamics.” <i>SciPost Physics</i>. SciPost, 2021. <a href=\"https://doi.org/10.21468/scipostphys.11.3.048\">https://doi.org/10.21468/scipostphys.11.3.048</a>.","ieee":"S. De Nicola, “Importance sampling scheme for the stochastic simulation of quantum spin dynamics,” <i>SciPost Physics</i>, vol. 11, no. 3. SciPost, 2021.","apa":"De Nicola, S. (2021). Importance sampling scheme for the stochastic simulation of quantum spin dynamics. <i>SciPost Physics</i>. SciPost. <a href=\"https://doi.org/10.21468/scipostphys.11.3.048\">https://doi.org/10.21468/scipostphys.11.3.048</a>"},"abstract":[{"lang":"eng","text":"The numerical simulation of dynamical phenomena in interacting quantum systems is a notoriously hard problem. Although a number of promising numerical methods exist, they often have limited applicability due to the growth of entanglement or the presence of the so-called sign problem. In this work, we develop an importance sampling scheme for the simulation of quantum spin dynamics, building on a recent approach mapping quantum spin systems to classical stochastic processes. The importance sampling scheme is based on identifying the classical trajectory that yields the largest contribution to a given quantum observable. An exact transformation is then carried out to preferentially sample trajectories that are close to the dominant one. We demonstrate that this approach is capable of reducing the temporal growth of fluctuations in the stochastic quantities, thus extending the range of accessible times and system sizes compared to direct sampling. We discuss advantages and limitations of the proposed approach, outlining directions\r\nfor further developments."}],"author":[{"orcid":"0000-0002-4842-6671","last_name":"De Nicola","full_name":"De Nicola, Stefano","first_name":"Stefano","id":"42832B76-F248-11E8-B48F-1D18A9856A87"}],"keyword":["General Physics and Astronomy"],"arxiv":1,"volume":11,"date_updated":"2023-08-11T10:59:29Z","oa":1,"article_processing_charge":"No","_id":"9981","publication_identifier":{"eissn":["2666-9366"],"issn":["2542-4653"]},"user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","project":[{"call_identifier":"H2020","name":"ISTplus - Postdoctoral Fellowships","_id":"260C2330-B435-11E9-9278-68D0E5697425","grant_number":"754411"}],"oa_version":"Published Version","quality_controlled":"1","year":"2021","doi":"10.21468/scipostphys.11.3.048","ec_funded":1,"external_id":{"isi":["000692534200001"],"arxiv":["2103.16468"]},"title":"Importance sampling scheme for the stochastic simulation of quantum spin dynamics","tmp":{"image":"/images/cc_by.png","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"article_number":"048","isi":1,"ddc":["519"],"day":"02","type":"journal_article","intvolume":"        11","status":"public","issue":"3","publication":"SciPost Physics","file_date_updated":"2021-09-02T14:05:43Z","month":"09","date_published":"2021-09-02T00:00:00Z","article_type":"original","publisher":"SciPost","language":[{"iso":"eng"}],"has_accepted_license":"1","department":[{"_id":"MaSe"}],"date_created":"2021-09-02T11:49:47Z","file":[{"success":1,"relation":"main_file","content_type":"application/pdf","creator":"cchlebak","file_id":"9984","file_size":373833,"file_name":"2021_SciPostPhys_DeNicola.pdf","checksum":"e4ec69d893e31811efc6093cb6ea8eb7","date_created":"2021-09-02T14:05:43Z","access_level":"open_access","date_updated":"2021-09-02T14:05:43Z"}]},{"oa":1,"volume":9,"date_updated":"2023-08-22T08:28:24Z","article_processing_charge":"No","_id":"8199","publication_identifier":{"issn":["2542-4653"]},"acknowledgement":"N.L., T.G. and E.B. acknowledge support from the European Research Council (ERC) under\r\nthe European Union Horizon 2020 Research and Innovation Programme (Grant Agreement\r\nNo. 639172). T.G. was in part supported by an Aly Kaufman Fellowship at the Technion. T.G.\r\nacknowledges funding from the Institute of Science and Technology (IST) Austria, and from\r\nthe European Union’s Horizon 2020 research and innovation programme under the Marie\r\nSkłodowska-Curie Grant Agreement No. 754411. N.L. acknowledges support from the People Programme (Marie Curie Actions) of the European Unions Seventh Framework 546 Programme (FP7/20072013), under REA Grant Agreement No. 631696, and by the Israeli Center\r\nof Research Excellence (I-CORE) Circle of Light funded by the Israel Science Foundation (Grant\r\nNo. 1802/12). M.R. gratefully acknowledges the support of the European Research Council\r\n(ERC) under the European Union Horizon 2020 Research and Innovation Programme (Grant\r\nAgreement No. 678862). M.R. acknowledges the support of the Villum Foundation. M.R. and\r\nE.B. acknowledge support from CRC 183 of the Deutsche Forschungsgemeinschaft","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","quality_controlled":"1","project":[{"call_identifier":"H2020","_id":"260C2330-B435-11E9-9278-68D0E5697425","name":"ISTplus - Postdoctoral Fellowships","grant_number":"754411"}],"oa_version":"Published Version","publication_status":"published","citation":{"short":"T. Gulden, E. Berg, M.S. Rudner, N. Lindner, SciPost Physics 9 (2020).","ista":"Gulden T, Berg E, Rudner MS, Lindner N. 2020. Exponentially long lifetime of universal quasi-steady states in topological Floquet pumps. SciPost Physics. 9, 015.","mla":"Gulden, Tobias, et al. “Exponentially Long Lifetime of Universal Quasi-Steady States in Topological Floquet Pumps.” <i>SciPost Physics</i>, vol. 9, 015, SciPost Foundation, 2020, doi:<a href=\"https://doi.org/10.21468/scipostphys.9.1.015\">10.21468/scipostphys.9.1.015</a>.","ama":"Gulden T, Berg E, Rudner MS, Lindner N. Exponentially long lifetime of universal quasi-steady states in topological Floquet pumps. <i>SciPost Physics</i>. 2020;9. doi:<a href=\"https://doi.org/10.21468/scipostphys.9.1.015\">10.21468/scipostphys.9.1.015</a>","chicago":"Gulden, Tobias, Erez Berg, Mark Spencer Rudner, and Netanel Lindner. “Exponentially Long Lifetime of Universal Quasi-Steady States in Topological Floquet Pumps.” <i>SciPost Physics</i>. SciPost Foundation, 2020. <a href=\"https://doi.org/10.21468/scipostphys.9.1.015\">https://doi.org/10.21468/scipostphys.9.1.015</a>.","ieee":"T. Gulden, E. Berg, M. S. Rudner, and N. Lindner, “Exponentially long lifetime of universal quasi-steady states in topological Floquet pumps,” <i>SciPost Physics</i>, vol. 9. SciPost Foundation, 2020.","apa":"Gulden, T., Berg, E., Rudner, M. S., &#38; Lindner, N. (2020). Exponentially long lifetime of universal quasi-steady states in topological Floquet pumps. <i>SciPost Physics</i>. SciPost Foundation. <a href=\"https://doi.org/10.21468/scipostphys.9.1.015\">https://doi.org/10.21468/scipostphys.9.1.015</a>"},"abstract":[{"text":"We investigate a mechanism to transiently stabilize topological phenomena in long-lived quasi-steady states of isolated quantum many-body systems driven at low frequencies. We obtain an analytical bound for the lifetime of the quasi-steady states which is exponentially large in the inverse driving frequency. Within this lifetime, the quasi-steady state is characterized by maximum entropy subject to the constraint of fixed number of particles in the system's Floquet-Bloch bands. In such a state, all the non-universal properties of these bands are washed out, hence only the topological properties persist.","lang":"eng"}],"author":[{"first_name":"Tobias","orcid":"0000-0001-6814-7541","full_name":"Gulden, Tobias","last_name":"Gulden","id":"1083E038-9F73-11E9-A4B5-532AE6697425"},{"first_name":"Erez","last_name":"Berg","full_name":"Berg, Erez"},{"full_name":"Rudner, Mark Spencer","last_name":"Rudner","first_name":"Mark Spencer"},{"first_name":"Netanel","last_name":"Lindner","full_name":"Lindner, Netanel"}],"tmp":{"image":"/images/cc_by.png","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"article_number":"015","isi":1,"ddc":["530"],"year":"2020","doi":"10.21468/scipostphys.9.1.015","ec_funded":1,"title":"Exponentially long lifetime of universal quasi-steady states in topological Floquet pumps","external_id":{"isi":["000557362300008"]},"publication":"SciPost Physics","file_date_updated":"2020-08-06T08:56:06Z","day":"29","type":"journal_article","intvolume":"         9","status":"public","has_accepted_license":"1","department":[{"_id":"MaSe"}],"file":[{"content_type":"application/pdf","relation":"main_file","file_id":"8202","creator":"dernst","success":1,"date_updated":"2020-08-06T08:56:06Z","access_level":"open_access","file_name":"2020_SciPostPhys_Gulden.pdf","file_size":531137,"date_created":"2020-08-06T08:56:06Z"}],"date_created":"2020-08-04T13:04:15Z","month":"07","article_type":"original","date_published":"2020-07-29T00:00:00Z","publisher":"SciPost Foundation","scopus_import":"1","language":[{"iso":"eng"}]}]