Exact expectation values of local fields in the quantum sine-Gordon model

被引：316

作者：

Lukyanov, S

Zamolodchikov, A

机构：

[1] RUTGERS STATE UNIV, DEPT PHYS & ASTRON, PISCATAWAY, NJ 08855 USA

[2] LD LANDAU THEORET PHYS INST, CHERNOGOLOVKA 142432, RUSSIA

来源：

NUCLEAR PHYSICS B | 1997年 / 493卷 / 03期

基金：

美国国家科学基金会;

关键词：

conformal perturbation theory; integrable quantum field theory; Sine-Gordon model;

D O I：

10.1016/S0550-3213(97)00123-5

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We propose an explicit expression for vacuum expectation values [e(ia phi)] of the exponential fields in the sine-Gordon model. Our expression agrees both with semi-classical results in the sine-Gordon theory and with perturbative calculations in the massive Thirring model. We use this expression to make new predictions about the large-distance asymptotic form of the two-point correlation function in the XXZ spin chain. (C) 1997 Elsevier Science B.V.

引用

页码：571 / 587

页数：17

共 23 条

[1] ASYMPTOTICS OF A TAU-FUNCTION AND TOEPLITZ DETERMINANTS WITH SINGULAR GENERATING-FUNCTIONS [J].