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Many-body quantum dynamics of initially trapped systems due to a stark potential: Thermalization versus Bloch oscillations

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journal contribution
posted on 29.03.2021, 13:18 by P Ribeiro, Achilleas LazaridesAchilleas Lazarides, M Haque
© 2020 authors. Published by the American Physical Society. We analyze the dynamics of an initially trapped cloud of interacting quantum particles on a lattice under a linear (Stark) potential. We reveal a dichotomy: Initially trapped interacting systems possess features typical of both many-body-localized and thermalizing systems. We consider both fermions (t-V model) and bosons (Bose-Hubbard model). For the zero and infinite interaction limits, both systems are integrable: We provide analytic solutions in terms of the moments of the initial cloud shape and clarify how the recurrent dynamics (many-body Bloch oscillations) depends on the initial state. Away from the integrable points, we identify and explain the timescale at which Bloch oscillations decohere.

Funding

Investigador FCT Contract No. IF/00347/2014 and Grant No. UID/ CTM/04540/2019

History

School

  • Science

Department

  • Mathematical Sciences

Published in

Physical Review Letters

Volume

124

Issue

11

Publisher

American Physical Society

Version

VoR (Version of Record)

Rights holder

© The authors

Publisher statement

This is an Open Access Article. It is published by American Physical Society under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/

Acceptance date

20/02/2020

Publication date

2020-03-17

Copyright date

2020

ISSN

0031-9007

eISSN

1079-7114

Language

en

Location

United States

Depositor

Dr Achilleas Lazarides . Deposit date: 23 March 2021

Article number

110603