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Title:

Characterizing Time Irreversibility in Disordered Fermionic Systems by the Effect of Local Perturbations

Document type:
Zeitschriftenaufsatz
Author(s):
Vardhan, Shreya; De Tomasi, Giuseppe; Heyl, Markus; Heller, Eric J.; Pollmann, Frank
Abstract:
We study the effects of local perturbations on the dynamics of disordered fermionic systems in order to characterize time irreversibility. We focus on three different systems: the noninteracting Anderson and Aubry-André-Harper (AAH) models and the interacting spinless disordered t−V chain. First, we consider the effect on the full many-body wave functions by measuring the Loschmidt echo (LE). We show that in the extended or ergodic phase the LE decays exponentially fast with time, while in the l...     »
Journal title:
Physical Review Letters 2017-07
Year:
2017
Journal volume:
119
Journal issue:
1
Fulltext / DOI:
doi:10.1103/physrevlett.119.016802
Publisher:
American Physical Society (APS)
E-ISSN:
0031-90071079-7114
Date of publication:
06.07.2017
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