Dynamics of the mean-field interacting quantum kicked rotor
Quantum Physics
2020-04-30 v2 Quantum Gases
Abstract
We study the dynamics of the many-body atomic kicked rotor with interactions at the mean-field level, governed by the Gross-Pitaevskii equation. We show that dynamical localization is destroyed by the interaction, and replaced by a subdiffusive behavior. In contrast to results previously obtained from a simplified version of the Gross-Pitaevskii equation, the subdiffusive exponent does not appear to be universal. By studying the phase of the mean-field wave function, we propose a new approximation that describes correctly the dynamics at experimentally relevant times close to the start of subdiffusion, while preserving the reduced computational cost of the former approximation.
Cite
@article{arxiv.2001.06406,
title = {Dynamics of the mean-field interacting quantum kicked rotor},
author = {Samuel Lellouch and Adam Rançon and Stephan De Bièvre and Dominique Delande and Jean Claude Garreau},
journal= {arXiv preprint arXiv:2001.06406},
year = {2020}
}
Comments
v1) 5 pages, 4 figures; v2) 7 pages, 4 figures