Document Type

Article

Publication Date

May 2012

Publication Title

Physical Review E

Volume

85

Issue Number

5

DOI

10.1103/PhysRevE.85.050102

Keywords

Quantum, Quenches, Thermal, Relaxation, Equilibrium

Disciplines

Astrophysics and Astronomy | Physical Sciences and Mathematics | Physics

Abstract

We study spectral properties and the dynamics after a quench of one-dimensional spinless fermions with short-range interactions and long-range random hopping. We show that a sufficiently fast decay of the hopping term promotes localization effects at finite temperature, which prevents thermalization even if the classical motion is chaotic. For slower decays, we find that thermalization does occur. However, within this model, the latter regime falls in an unexpected universality class, namely, observables exhibit a power-law (as opposed to an exponential) approach to their thermal expectation values.

Comments

This article originally appeared in Physical Review E, volume 85, issue 5, 2012, published by the American Physical Society. ©2012 American Physical Society. The article can also be found online at this link.
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