Exact Real-Time Longitudinal Correlation Functions of the Massive XXZ Chain

被引：22

作者：

Babenko, Constantin ^{[1
]}

Goehmann, Frank ^{[1
]}

Kozlowski, Karol K. ^{[2
]}

Sirker, Jesko ^{[3
,4
]}

Suzuki, Junji ^{[5
]}

机构：

[1] Berg Univ Wuppertal, Fak Math & Nat Wissensch, D-42097 Wuppertal, Germany

[2] Univ Claude Bernard, Univ Lyon, ENS Lyon, CNRS,Lab Phys, F-69342 Lyon, France

[3] Univ Manitoba, Dept Phys & Astron, Winnipeg, MB R3T 2N2, Canada

[4] Univ Manitoba, Manitoba Quantum Inst, Winnipeg, MB R3T 2N2, Canada

[5] Shizuoka Univ, Fac Sci, Dept Phys, Ohya 836, Shizuoka, Japan

来源：

PHYSICAL REVIEW LETTERS | 2021年 / 126卷 / 21期

基金：

加拿大自然科学与工程研究理事会;

关键词：

FORM-FACTORS; MODEL; DYNAMICS; MATRIX; STATES;

D O I：

10.1103/PhysRevLett.126.210602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We apply a recently developed thermal form factor expansion method to evaluate the real-time longitudinal spin-spin correlation functions of the spin-1/2 XXZ chain in the antiferromagnetically ordered regime at zero temperature. An analytical result incorporating all types of excitations in the model is obtained, without any approximations. This allows for the accurate calculation of the real-time correlations in this strongly interacting quantum system for arbitrary distances and times.

引用

页数：7

共 75 条

[1] Exact four-spinon dynamical correlation function of the Heisenberg model [J].