Many-body localization of 1D disordered impenetrable two-component fermions
Disordered Systems and Neural Networks
2022-07-13 v2
Abstract
We study effects of disorder on eigenstates of 1D two-component fermions with infinitely strong Hubbard repulsion. We demonstrate that the spin-independent (potential) disorder reduces the problem to the one-particle Anderson localization taking place at arbitrarily weak disorder. In contrast, a random magnetic field can cause reentrant many-body localization-delocalization transitions. Surprisingly weak magnetic field destroys one-particle localization caused by not too strong potential disorder, whereas at much stronger fields the states are many-body localized. We present numerical support of these conclusions.
Keywords
Cite
@article{arxiv.2102.13215,
title = {Many-body localization of 1D disordered impenetrable two-component fermions},
author = {M. S. Bahovadinov and D. V. Kurlov and B. L. Altshuler and G. V. Shlyapnikov},
journal= {arXiv preprint arXiv:2102.13215},
year = {2022}
}