Exact solution of XXZ spin chain with unparallel boundary fields

被引：193

作者：

Cao, JP

Lin, HQ

Shi, KJ

Wang, YP

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China

[2] Chinese Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China

[3] NW Univ Xian, Inst Modern Phys, Xian 710069, Peoples R China

[4] Chinese Acad Sci, Int Ctr Quantum Struct, Beijing 100080, Peoples R China

来源：

NUCLEAR PHYSICS B | 2003年 / 663卷 / 03期

基金：

美国国家科学基金会;

关键词：

XXZ spin chain; gauge transformation; Bethe ansatz; reflection equation;

D O I：

10.1016/S0550-3213(03)00372-9

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：

By using a set of gauge transformations (face-vertex correspondence relations), the XXZ spin chain with both transverse and longitudinal magnetic boundary fields is studied. The corresponding reflection boundary matrices therefore have non-diagonal elements. The Bethe ansatz equations, the eigenvalues and the eigenstates of the transfer matrix and the Hamiltonian of the system are obtained in the framework of algebraic Bethe ansatz method. The ground states for different couplings are derived. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：487 / 519

页数：33

共 39 条

[1] SURFACE EXPONENTS OF THE QUANTUM XXZ, ASHKIN-TELLER AND POTTS MODELS [J].