English

Localization and delocalization properties in quasi-periodically driven one-dimensional disordered system

Disordered Systems and Neural Networks 2022-05-11 v1 Quantum Physics

Abstract

Localization and delocalization of quantum diffusion in time-continuous one-dimensional Anderson model perturbed by the quasi-periodic harmonic oscillations of MM colors is investigated systematically, which has been partly reported by the preliminary letter [PRE {\bf 103}, L040202(2021)]. We investigate in detail the localization-delocalization characteristics of the model with respect to three parameters: the disorder strength WW, the perturbation strength ϵ\epsilon and the number of the colors MM which plays the similar role of spatial dimension. In particular, attentions are focused on the presence of localization-delocalization transition (LDT) and its critical properties. For M3M\geq 3 the LDT exists and a normal diffusion is recovered above a critical strength ϵ\epsilon, and the characteristics of diffusion dynamics mimic the diffusion process predicted for the stochastically perturbed Anderson model even though MM is not large. These results are compared with the results of time-discrete quantum maps, i.e., Anderson map and the standard map. Further, the features of delocalized dynamics is discussed in comparison with a limit model which has no static disordered part.

Keywords

Cite

@article{arxiv.2202.08582,
  title  = {Localization and delocalization properties in quasi-periodically driven one-dimensional disordered system},
  author = {Hiroaki S. Yamada and Kensuke S. Ikeda},
  journal= {arXiv preprint arXiv:2202.08582},
  year   = {2022}
}

Comments

16 pages, 22 figures

R2 v1 2026-06-24T09:42:28.827Z