{"date_created":"2024-09-22T22:01:42Z","_id":"18110","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","volume":110,"month":"09","issue":"10","publication":"Physical Review B","publisher":"American Physical Society","project":[{"_id":"23841C26-32DE-11EA-91FC-C7463DDC885E","call_identifier":"H2020","name":"Non-Ergodic Quantum Matter: Universality, Dynamics and Control","grant_number":"850899"}],"year":"2024","date_updated":"2024-09-30T09:11:09Z","author":[{"first_name":"Pietro","full_name":"Brighi, Pietro","id":"4115AF5C-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-7969-2729","last_name":"Brighi"},{"id":"F75EE9BE-5C90-11EA-905D-16643DDC885E","first_name":"Marko","full_name":"Ljubotina, Marko","last_name":"Ljubotina","orcid":"0000-0003-0038-7068"}],"publication_identifier":{"issn":["2469-9950"],"eissn":["2469-9969"]},"main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2405.02102"}],"department":[{"_id":"MaSe"}],"day":"11","corr_author":"1","date_published":"2024-09-11T00:00:00Z","article_processing_charge":"No","abstract":[{"lang":"eng","text":"We study a chaotic particle-conserving kinetically constrained model, with a single parameter which allows us to break reflection symmetry. Through extensive numerical simulations we find that the domain wall state shows a variety of dynamical behaviors from localization all the way to ballistic transport, depending on the value of the reflection breaking parameter. Surprisingly, such anomalous behavior is not mirrored in infinite-temperature dynamics, which appear to scale diffusively, in line with expectations for generic interacting models. However, studying the particle density gradient, we show that the lack of reflection symmetry affects infinite-temperature dynamics, resulting in an asymmetric dynamical structure factor. This is in disagreement with normal diffusion and suggests that the model may also exhibit anomalous dynamics at infinite temperature in the thermodynamic limit. Finally, we observe low-entangled eigenstates in the spectrum of the model, a telltale sign of quantum many-body scars."}],"title":"Anomalous transport in the kinetically constrained quantum East-West model","acknowledgement":"The authors acknowledge useful discussions with M. Serbyn, Z. Papic, and A. Nunnenkamp. ´\r\nP.B. is supported by the Erwin Schrödinger Center for Quantum Science & Technology (ESQ) of the Österreichische Akademie der Wissenschaften (ÖAW) under the Discovery Grant. M.L. acknowledges support from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant Agreement\r\nNo. 850899). The numerical simulations were performed using the ITensor library [68] on the Vienna Scientific Cluster (VSC).","oa":1,"quality_controlled":"1","external_id":{"arxiv":["2405.02102"]},"ec_funded":1,"article_number":"L100304","type":"journal_article","language":[{"iso":"eng"}],"intvolume":"       110","publication_status":"published","citation":{"ista":"Brighi P, Ljubotina M. 2024. Anomalous transport in the kinetically constrained quantum East-West model. Physical Review B. 110(10), L100304.","short":"P. Brighi, M. Ljubotina, Physical Review B 110 (2024).","chicago":"Brighi, Pietro, and Marko Ljubotina. “Anomalous Transport in the Kinetically Constrained Quantum East-West Model.” <i>Physical Review B</i>. American Physical Society, 2024. <a href=\"https://doi.org/10.1103/PhysRevB.110.L100304\">https://doi.org/10.1103/PhysRevB.110.L100304</a>.","ama":"Brighi P, Ljubotina M. Anomalous transport in the kinetically constrained quantum East-West model. <i>Physical Review B</i>. 2024;110(10). doi:<a href=\"https://doi.org/10.1103/PhysRevB.110.L100304\">10.1103/PhysRevB.110.L100304</a>","apa":"Brighi, P., &#38; Ljubotina, M. (2024). Anomalous transport in the kinetically constrained quantum East-West model. <i>Physical Review B</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevB.110.L100304\">https://doi.org/10.1103/PhysRevB.110.L100304</a>","mla":"Brighi, Pietro, and Marko Ljubotina. “Anomalous Transport in the Kinetically Constrained Quantum East-West Model.” <i>Physical Review B</i>, vol. 110, no. 10, L100304, American Physical Society, 2024, doi:<a href=\"https://doi.org/10.1103/PhysRevB.110.L100304\">10.1103/PhysRevB.110.L100304</a>.","ieee":"P. Brighi and M. Ljubotina, “Anomalous transport in the kinetically constrained quantum East-West model,” <i>Physical Review B</i>, vol. 110, no. 10. American Physical Society, 2024."},"status":"public","oa_version":"Preprint","doi":"10.1103/PhysRevB.110.L100304","scopus_import":"1","article_type":"letter_note"}