Long-time large-distance asymptotics of the transverse correlation functions of the XX chain in the spacelike regime

被引：10

作者：

Goehmann, Frank ^{[1
]}

Kozlowski, Karol K. ^{[2
]}

Suzuki, Junji ^{[3
]}

机构：

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

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

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

来源：

LETTERS IN MATHEMATICAL PHYSICS | 2020年 / 110卷 / 07期

关键词：

Integrable quantum spins chains; Dynamical correlation functions at finite temperature; Asymptotics of correlation functions;

D O I：

10.1007/s11005-020-01276-y

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We derive an explicit expression for the leading term in the long-time, large-distance asymptotic expansion of a transverse dynamical two-point function of the XX chain in the spacelike regime. This expression is valid for all nonzero finite temperatures and for all magnetic fields below the saturation threshold. It is obtained here by means of a straightforward term-by-term analysis of a thermal form factor series, derived in previous work, and demonstrates the usefulness of the latter.

引用

页码：1783 / 1797

页数：15

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