Slow dynamics in translation-invariant quantum lattice models

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

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.

• Jezik: Angleški jezik
• Ključne besede: quantum mechanics, statistical physics
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FMF - Fakulteta za matematiko in fiziko
• Status publikacije: Objavljeno
• Različica publikacije: Recenzirani rokopis
• Leto izida: 2018
• Št. strani: Str. 104307-1-104307-10
• Številčenje: Vol. 97, iss. 10
• PID: 20.500.12556/RUL-100569
• UDK: 536.93
• ISSN pri članku: 2469-9950
• DOI: 10.1103/PhysRevB.97.104307
• COBISS.SI-ID: 3185508
• Datum objave v RUL: 29.03.2018

Gradivo je del revije

• Naslov: Physical review
• Založnik: American Physical Society
• ISSN: 2469-9950
• COBISS.SI-ID: 2997348

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: kvantna mehanika, statistična fizika

Projekti

• Financer: EC - European Commission
• Program financ.: H2020
• Številka projekta: 694544
• Naslov: Open many-body non-equilibrium systems
• Akronim: OMNES