Exact thermodynamics and transport in the classical sine-Gordon model

被引：18

作者：

Koch, Rebekka ^{[1
]}

Bastianello, Alvise ^{[2
,3
,4
]}

机构：

[1] Univ Amsterdam, Inst Theoret Phys, POB 94485, NL-1090 GL Amsterdam, Netherlands

[2] Tech Univ Munich, Dept Phys, D-85748 Garching, Germany

[3] Tech Univ Munich, Inst Adv Study, D-85748 Garching, Germany

[4] Munich Ctr Quantum Sci & Technol MCQST, Schellingstr 4, D-80799 Munich, Germany

来源：

SCIPOST PHYSICS | 2023年 / 15卷 / 04期

基金：

欧洲研究理事会;

关键词：

FIELD-INDUCED GAP; STATISTICAL-MECHANICS; EQUATION;

D O I：

10.21468/SciPostPhys.15.4.140

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We revisit the exact thermodynamic description of the classical sine-Gordon field theory, a well-known integrable model. We found that existing results in the literature based on the soliton-gas picture did not correctly take into account light, but extended, solitons and thus led to incorrect results. This issue is regularized upon requantization: we derive the correct thermodynamics by taking the semiclassical limit of the quantum model. Our results are then extended to transport settings by means of Generalized Hydrodynamics.

引用

页数：31

共 89 条

[81] Elementary excitations of the S=1/2 one-dimensional antiferromagnet KCuGaF6 in a magnetic field and quantum sine-Gordon model [J].