DIFFERENTIAL-EQUATION FOR A CORRELATION-FUNCTION OF THE SPIN-1/2 HEISENBERG CHAIN

被引：7

作者：

FRAHM, H

ITS, AR

KOREPIN, VE

机构：

[1] INDIANA UNIV PURDUE UNIV, DEPT MATH SCI, INDIANAPOLIS, IN 46202 USA

[2] SUNY STONY BROOK, INST THEORET PHYS, STONY BROOK, NY 11794 USA

来源：

NUCLEAR PHYSICS B | 1994年 / 428卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0550-3213(94)90370-0

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 consider the probability to find a string of x adjacent parallel spins in the antiferromagnetic ground state of the model (in a magnetic field). We derive a system of integro-difference equations which define this probability. This system is completely integrable, it has Lax representation and a corresponding Riemann-Hilbert problem. The quantum correlation function is a tau-function of this system.

引用

页码：694 / 710

页数：17

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