HIDDEN SYMMETRY-BREAKING IN A GENERALIZED VALENCE-BOND SOLID MODEL

被引：15
|
作者：
TOTSUKA, K
SUZUKI, M
机构：
[1] Dept. of Phys., Tokyo Univ.
来源：
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 1994年 / 27卷 / 19期
关键词：
D O I：
10.1088/0305-4470/27/19/017
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A 'boson' representation for the ground state of the generalized valence-bond solid model is derived. The relation between this expression and the matrix-product representation of Klumper et al is discussed. It is shown that the hidden Z2 x Z2-symmetry is partially broken in this model. Elementary excitations of this system have a topological nature similar to that in the Affleck, Kennedy, Lieb and Tasaki model.
引用
收藏
页码：6443 / 6456
页数：14
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