DENSITY-MATRIX RENORMALIZATION-GROUP STUDY OF THE CORRELATION-FUNCTION OF THE BILINEAR-BIQUADRATIC SPIN-1 CHAIN

被引：52

作者：

BURSILL, RJ ^{[1
]}

XIANG, T ^{[1
]}

GEHRING, GA ^{[1
]}

机构：

[1] UNIV CAMBRIDGE,INTERDISCIPLINARY RES CTR SUPERCONDUCT,CAMBRIDGE CB3 0HE,ENGLAND

来源：

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 1995年 / 28卷 / 08期

关键词：

D O I：

10.1088/0305-4470/28/8/005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using the recently developed density matrix renormalization group approach, we study the correlation function of the spin-1 chain with quadratic and biquadratic interactions. This allows us to define and calculate the periodicity of the ground state which differs markedly from that in the classical analogue. Combining our results with other studies, we predict three phases in the region where the quadratic and biquadratic terms are both positive.

引用

页码：2109 / 2119

页数：11

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