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

页码：4535 / 4546

页数：12

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