Comment on "Reentrant Localization Transition in a Quasiperiodic Chain"

TL;DR

This paper challenges previous claims by demonstrating that reentrant localization transitions can occur in quasiperiodic chains with uniform disorder when larger system parameters are considered, expanding understanding of localization phenomena.

Contribution

It shows that reentrant localization transitions are possible in uniform disorder quasiperiodic chains, contrary to prior claims that they only occur with staggered disorder.

Findings

Reentrant localization can occur with uniform disorder.

Larger system parameters reveal reentrant behavior.

Challenges previous assumptions about disorder types.

Abstract

In their Letter[Phys. Rev. Lett. 126, 106803 (2021)], the authors found an interesting reentrant localization phenomenon in a one-dimensional dimerized lattice with quasiperiodic disorder, i.e., the system undergoes a second localization transition at a higher disorder strength. They claimed that this reentrant feature would appear in the case of staggered disorder, but not for the uniform ones. In this Comment, we show that such reentrant feature can also appear for the uniform disorder when larger system parameters are taken into account.