Relaxation and entropy generation after quenching quantum spin chains

Lencsés, Máté; Pomponio, Octavio; Takács, Gábor

doi:10.21468/SciPostPhys.9.1.011

SciPost Physics

Relaxation and entropy generation after quenching quantum spin chains

Máté Lencses, Octavio Pomponio, Gabor Takacs

SciPost Phys. 9, 011 (2020) · published 22 July 2020

doi: 10.21468/SciPostPhys.9.1.011
pdf
Submissions/Reports

Abstract

This work considers entropy generation and relaxation in quantum quenches in the Ising and $3$-state Potts spin chains. In the absence of explicit symmetry breaking we find universal ratios involving R\'enyi entropy growth rates and magnetisation relaxation for small quenches. We also demonstrate that the magnetisation relaxation rate provides an observable signature for the "dynamical Gibbs effect" which is a recently discovered characteristic non-monotonous behaviour of entropy growth linked to changes in the quasi-particle spectrum.

TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.9.1.011
TI  - Relaxation and entropy generation after quenching quantum spin chains
PY  - 2020/07/22
UR  - https://scipost.org/SciPostPhys.9.1.011
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 9
IS  - 1
SP  - 011
A1  - Lencsés, Máté
AU  - Pomponio, Octavio
AU  - Takács, Gábor
AB  - This work considers entropy generation and relaxation in quantum quenches in the Ising and $3$-state Potts spin chains. In the absence of explicit symmetry breaking we find universal ratios involving R\'enyi entropy growth rates and magnetisation relaxation for small quenches. We also demonstrate that the magnetisation relaxation rate provides an observable signature for the "dynamical Gibbs effect" which is a recently discovered characteristic non-monotonous behaviour of entropy growth linked to changes in the quasi-particle spectrum.
ER  -

@Article{10.21468/SciPostPhys.9.1.011,
	title={{Relaxation and entropy generation after quenching quantum spin chains}},
	author={Máté Lencses and Octavio Pomponio and Gabor Takacs},
	journal={SciPost Phys.},
	volume={9},
	pages={011},
	year={2020},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.9.1.011},
	url={https://scipost.org/10.21468/SciPostPhys.9.1.011},
}

Cited by 6

Ontology / Topics

See full Ontology or Topics database.

Potts model Quantum quenches Quantum spin chains

Authors / Affiliations: mappings to Contributors and Organizations

See all Organizations.

¹ Máté Lencsés,
² Octavio Pomponio,
¹ Gábor Takács

Funders for the research work leading to this publication

Emberi Eroforrások Minisztériuma (through Organization: Emberi Erőforrások Minisztérium / Ministry of Human Capacities [Emmi])
Nemzeti Kutatási, Fejlesztési és Innovációs Hivatal / National Research, Development and Innovation Office [NKFIH]