Kibble-Zurek scaling in one-dimensional localization transitions

TL;DR

This paper investigates the driven dynamics of one-dimensional localization transitions, demonstrating that Kibble-Zurek scaling describes the evolution of localization length and IPR during disorder strength changes, extending understanding of localization and scaling.

Contribution

It extends the application of Kibble-Zurek scaling to localization transitions in disordered and quasiperiodic systems, providing new insights into their driven dynamics.

Findings

Kibble-Zurek scaling describes driven dynamics in 1D localization transitions.

Localization length and IPR follow KZS during disorder strength variation.

Both disorder and quasiperiodic potential influence the critical scaling behavior.

Abstract

In this work, we explore the driven dynamics of the one-dimensional ($1$D) localization transitions. By linearly changing the strength of disorder potential, we calculate the evolution of the localization length $\xi$ and the inverse participation ratio (IPR) in a disordered Aubry-Andr\'{e} (AA) model, and investigate the dependence of these quantities on the driving rate. At first, we focus on the limit in the absence of the quasiperiodic potential. We find that the driven dynamics from both ground state and excited state can be described by the Kibble-Zurek scaling (KZS). Then, the driven dynamics near the critical point of the AA model is studied. Here, since both the disorder and the quasiperiodic potential are relevant directions, the KZS should include both scaling variables. Our present work not only extends our understanding of the localization transitions but also generalize the application of the KZS.