ON THE CRITICAL-BEHAVIOR OF THE ANISOTROPIC BIQUADRATIC SPIN-1 CHAIN

被引：8
|
作者：
ALCARAZ, FC [1 ]
MALVEZZI, AL [1 ]
机构：
[1] UNIV FED SAO CARLOS, DEPT FIS, BR-13560 SAO CARLOS, SP, BRAZIL
来源：
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 1992年 / 25卷 / 17期
关键词：
D O I：
10.1088/0305-4470/25/17/015
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A study is made in the anisotropic biquadratic spin-1 Hamiltonian introduced by Batchelor et al. This model can be represented as a sum of operators satisfying a Temperley-Lieb algebra. Its critical behaviour is explored by using the relations between mass-gap amplitudes and critical exponents predicted by conformal invariance. The model, like in the XXZ chain, is found to exhibit a line of continuously varying exponents. By comparing its eigenspectrum with that of the XXZ Hamiltonian, several exact values are predicted.
引用
收藏
页码：4535 / 4546
页数：12
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