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Charge-current correlation equalities for quantum systems far from equilibrium

by D. Karevski, G. M. Schütz

Submission summary

As Contributors: Gunter Schütz
Arxiv Link: https://arxiv.org/abs/1812.03020v3
Date accepted: 2019-06-06
Date submitted: 2019-05-18
Submitted by: Schütz, Gunter
Submitted to: SciPost Physics
Domain(s): Theoretical
Subject area: Quantum Physics

Abstract

We prove that a recently derived correlation equality between conserved charges and their associated conserved currents for quantum systems far from equilibrium [O.A. Castro-Alvaredo et al., Phys. Rev. X \textbf{6}, 041065 (2016)], is valid under more general conditions than assumed so far. Similar correlation identities, which in generalized Gibbs ensembles give rise to a current symmetry somewhat reminiscent of the Onsager relations, turn out to hold also in the absence of translation invariance, for lattice models, and in any space dimension, and to imply a symmetry of the non-equilibrium linear response functions.

Current status:

Ontology / Topics

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Generalized Gibbs ensemble (GGE) Onsager relation Open quantum systems Out-of-equilibrium systems


Reports on this Submission

Anonymous Report 1 on 2019-6-5 Invited Report

Strengths

quite exhaustive discussion
clear explanations, well organised
some results surprising

Weaknesses

none

Report

I think the authors have improved the manuscript greatly. I like how exhaustive it is, and how it makes clear the consequences of each assumptions. The results - in particular the relations obtained without space translation invariance - are quite interesting. This is a very nice work.

Requested changes

none

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