Rigorous results for the quantum phase transitions in a dimerized S=1 ising lattice

被引:1
作者
Wu, Haina [1 ,2 ]
Yang, Zhihua [1 ]
Dai, Janhu [1 ]
Ying, Heping [1 ]
机构
[1] Zhejiang Univ, Inst Modern Phys, Hangzhou 310027, Peoples R China
[2] Northeastern Univ, Coll Sci, Shenyang 110006, Peoples R China
关键词
statistical lattice model; dimerization; quantum phase transitions;
D O I
10.1142/S0217732307023328
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We examine the ground state properties of a dimerized ferromagnetic S=1 Ising chain with single-ion crystal fields by mapping the model onto the dimerized S=1/2 Ising chain with transverse fields. We show that the system exhibits a series of Ising transitions depending on the dimerization strength of the crystal fields, while the critical points can be determined exactly.
引用
收藏
页码:727 / 731
页数:5
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