{"file_date_updated":"2023-09-20T10:46:10Z","file":[{"file_size":4866506,"creator":"dernst","date_created":"2023-09-20T10:46:10Z","access_level":"open_access","file_id":"14350","success":1,"checksum":"4cef6a8021f6b6c47ab2f2f2b1387ac2","content_type":"application/pdf","date_updated":"2023-09-20T10:46:10Z","relation":"main_file","file_name":"2023_SciPostPhysics_Brighi.pdf"}],"oa":1,"date_created":"2023-09-14T13:08:23Z","external_id":{"arxiv":["2210.15607"]},"publisher":"SciPost Foundation","year":"2023","author":[{"id":"4115AF5C-F248-11E8-B48F-1D18A9856A87","first_name":"Pietro","orcid":"0000-0002-7969-2729","last_name":"Brighi","full_name":"Brighi, Pietro"},{"id":"F75EE9BE-5C90-11EA-905D-16643DDC885E","last_name":"Ljubotina","full_name":"Ljubotina, Marko","orcid":"0000-0003-0038-7068","first_name":"Marko"},{"id":"47809E7E-F248-11E8-B48F-1D18A9856A87","full_name":"Serbyn, Maksym","last_name":"Serbyn","first_name":"Maksym","orcid":"0000-0002-2399-5827"}],"language":[{"iso":"eng"}],"issue":"3","tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","short":"CC BY (4.0)"},"article_type":"original","day":"13","month":"09","department":[{"_id":"MaSe"}],"project":[{"name":"Non-Ergodic Quantum Matter: Universality, Dynamics and Control","_id":"23841C26-32DE-11EA-91FC-C7463DDC885E","grant_number":"850899","call_identifier":"H2020"}],"ec_funded":1,"publication_identifier":{"issn":["2542-4653"]},"citation":{"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>.","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.","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>","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>.","short":"P. Brighi, M. Ljubotina, M. Serbyn, SciPost Physics 15 (2023).","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>","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."},"oa_version":"Published Version","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"}],"publication":"SciPost Physics","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","related_material":{"record":[{"status":"public","relation":"earlier_version","id":"12750"}]},"intvolume":"        15","has_accepted_license":"1","publication_status":"published","ddc":["530"],"date_updated":"2023-09-20T10:46:29Z","article_number":"093","keyword":["General Physics and Astronomy"],"status":"public","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).","article_processing_charge":"No","date_published":"2023-09-13T00:00:00Z","quality_controlled":"1","title":"Hilbert space fragmentation and slow dynamics in particle-conserving quantum East models","volume":15,"type":"journal_article","_id":"14334","doi":"10.21468/scipostphys.15.3.093"}