Alexios A. Michailidis (Author), Marko Žnidarič (Author), Mariya V. Medvedyeva (Author), Dmitry A. Abanin (Author), Tomaž Prosen (Author), Z. Papić (Author)

Abstract

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.

Keywords

kvantna mehanika;statistična fizika;quantum mechanics;statistical physics;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FMF - Faculty of Mathematics and Physics
UDC: 536.93
COBISS: 3185508 Link will open in a new window
ISSN: 2469-9950
Views: 1398
Downloads: 525
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Other data

Secondary language: Slovenian
Secondary keywords: kvantna mehanika;statistična fizika;
Pages: str. 104307-1-104307-10
Volume: ǂVol. ǂ97
Issue: ǂiss. ǂ10
Chronology: 2018
DOI: 10.1103/PhysRevB.97.104307
ID: 10920267