Absence of dynamical localization in interacting driven systems
Abstract
Using a numerically exact method we study the stability of dynamical localization to the addition of interactions in a periodically driven isolated quantum system which conserves only the total number of particles. We find that while even infinitesimally small interactions destroy dynamical localization, for weak interactions density transport is significantly suppressed and is asymptotically diffusive, with a diffusion coefficient proportional to the interaction strength. For systems tuned away from the dynamical localization point, even slightly, transport is dramatically enhanced and within the largest accessible systems sizes a diffusive regime is only pronounced for sufficiently small detunings.
Cite
@article{arxiv.1706.09429,
title = {Absence of dynamical localization in interacting driven systems},
author = {David J. Luitz and Yevgeny Bar Lev and Achilleas Lazarides},
journal= {arXiv preprint arXiv:1706.09429},
year = {2017}
}
Comments
Scipost resubmission. 14 pages, 4 figures. Changes to the figures. Corrects a few typos