A NEW APPROACH TO QUANTUM SPIN CHAINS AT FINITE TEMPERATURE

被引：90
|
作者：
SUZUKI, J
AKUTSU, Y
WADATI, M
机构：
[1] UNIV TOKYO, FAC SCI, DEPT PHYS, BUNKYO KU, TOKYO 113, JAPAN
[2] OSAKA UNIV, FAC SCI, DEPT PHYS, TOYONAKA, OSAKA 560, JAPAN
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1990年 / 59卷 / 08期
关键词：
D O I：
10.1143/JPSJ.59.2667
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Presented is a new approach to the study of one dimensional quantum spin systems at finite temperature. The approach is based upon a general structure of solvable models; the Yang-Baxter equation and the Bethe ansatz equation, and in addition the evaluation of finite size corrections. Provided that the ground state is constructed by the Bethe ansatz method, exact low temperature expansions of physical quantities are given without further assumption. © 1990, THE PHYSICAL SOCIETY OF JAPAN. All rights reserved.
引用
收藏
页码：2667 / 2680
页数：14
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