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Absence of dynamical localization in interacting driven systems
by David J. Luitz, Yevgeny Bar Lev, Achilleas Lazarides
This Submission thread is now published as
Submission summary
| Submission information |
| Preprint Link: |
http://arxiv.org/abs/1706.09429v2
(pdf)
|
| Date accepted: |
2017-10-06 |
| Date submitted: |
2017-09-29 02:00 |
| Submitted by: |
Luitz, David J. |
| Submitted to: |
SciPost Physics |
| Ontological classification |
| Academic field: |
Physics |
| Specialties: |
- Condensed Matter Physics - Theory
|
| Approach: |
Theoretical |
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.
