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Entanglement evolution and generalised hydrodynamics: interacting integrable systems

by Vincenzo Alba, Bruno Bertini, Maurizio Fagotti

Submission summary

As Contributors: Bruno Bertini · Maurizio Fagotti
Arxiv Link: https://arxiv.org/abs/1903.00467v2
Date submitted: 2019-03-18
Submitted by: Bertini, Bruno
Submitted to: SciPost Physics
Domain(s): Theoretical
Subject area: Quantum Physics

Abstract

We investigate the dynamics of bipartite entanglement after the sudden junction of two leads in interacting integrable models. By combining the quasiparticle picture for the entanglement spreading with Generalised Hydrodynamics we derive an analytical prediction for the dynamics of the entanglement entropy between a finite subsystem and the rest. We find that the entanglement rate between the two leads depends only on the physics at the interface and differs from the rate of exchange of thermodynamic entropy. This contrasts with the behaviour in free or homogeneous interacting integrable systems, where the two rates coincide.

Current status:
Editor-in-charge assigned

Submission & Refereeing History

Submission 1903.00467v2 on 18 March 2019

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