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.
Recommended Citation
Ehsan Khatami, Marcos Rigol, Armando Relaño, and Antonio García-García. "Quantum quenches in disordered systems: Approach to thermal equilibrium without a typical relaxation time" Physical Review E (2012). https://doi.org/10.1103/PhysRevE.85.050102
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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