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Quench dynamics in disordered two-dimensional Gross-Pitaevskii lattices

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Title
Quench dynamics in disordered two-dimensional Gross-Pitaevskii lattices
Author(s)
Arindam Mallick; Mithun Thudiyangal; Sergej Flach
Subject
DISCRETE BREATHERS, ; INTRINSIC LOCALIZED MODES, ; MODULATIONAL INSTABILITY
Publication Date
2020-09
Journal
PHYSICAL REVIEW A, v.102, no.3, pp.033301
Publisher
AMER PHYSICAL SOC
Abstract
© 2020 American Physical Society. We numerically investigate the quench expansion dynamics of an initially confined state in a two-dimensional Gross-Pitaevskii lattice in the presence of external disorder. The expansion dynamics is conveniently described in the control parameter space of the energy and norm densities. The expansion can slow down substantially if the expected final state is a nonergodic non-Gibbs one, regardless of the disorder strength. Likewise stronger disorder delays expansion. We compare our results with recent studies for quantum many-body quench experiments
URI
https://pr.ibs.re.kr/handle/8788114/7640
DOI
10.1103/PhysRevA.102.033301
ISSN
2469-9926
Appears in Collections:
Center for Theoretical Physics of Complex Systems(복잡계 이론물리 연구단) > 1. Journal Papers (저널논문)
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