Localization persisting under aperiodic driving
Disordered Systems and Neural Networks
2022-06-22 v2 Statistical Mechanics
Strongly Correlated Electrons
Quantum Physics
Abstract
Localization may survive in periodically driven (Floquet) quantum systems, but is generally unstable for aperiodic drives. In this work, we identify a hidden conservation law originating from a chiral symmetry in a disordered spin-1/2 XX chain. This protects indefinitely long-lived localization for general--even aperiodic--drives. Therefore, rather counter-intuitively, adding further potential disorder which spoils the conservation law delocalizes the system, via a controllable parametrically long-lived prethermal regime. This provides a first example of persistent single-particle `localization without eigenstates'.
Cite
@article{arxiv.2111.13558,
title = {Localization persisting under aperiodic driving},
author = {Hongzheng Zhao and Florian Mintert and Johannes Knolle and Roderich Moessner},
journal= {arXiv preprint arXiv:2111.13558},
year = {2022}
}
Comments
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