20.500.12556/RUL-100569 Slow dynamics in translation-invariant quantum lattice models Many-body quantum systems typically display fast dynamics and ballistic spreading of information. Here we address the open problem of how slow the dynamics can be after a generic breaking of integrability by local interactions. We develop a method based on degenerate perturbation theory that reveals slow dynamical regimes and delocalization processes in general translation invariant models, along with accurate estimates of their delocalization time scales. Our results shed light on the fundamental questions of the robustness of quantum integrable systems and the possibility of many-body localization without disorder. As an example, we construct a large class of one-dimensional lattice models where, despite the absence of asymptotic localization, the transient dynamics is exceptionally slow, i.e., the dynamics is indistinguishable from that of many-body localized systems for the system sizes and time scales accessible in experiments and numerical simulations. quantum mechanics statistical physics kvantna mehanika statistična fizika true false false Angleški jezik Slovenski jezik Neznano 2018-03-29 10:18:08 2018-03-29 10:18:08 2022-08-14 03:41:02 0000-00-00 00:00:00 2018 0 0 Str. 104307-1-104307-10 iss. 10 Vol. 97 2018 0000-00-00 PostprintKoncna Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 536.93 2469-9950 10.1103/PhysRevB.97.104307 3185508 2997348 RAZ_Michailidis_Alexios_A._i2018.pdf RAZ_Michailidis_Alexios_A._i2018.pdf 1 4DA0BFF3304F5004EEA71AE476CF0023 f12a65c272a3fa73da678f592843b0dd50e4bd02960d3cc23466be7da1844e7e 4c101c76-a1b5-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=111591 https://journals.aps.org/prb/abstract/10.1103/PhysRevB.97.104307 1 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=141231 Fakulteta za matematiko in fiziko 0 0 0