Multiparticle entanglement in the Lipkin-Meshkov-Glick model

被引：28
作者：
Cui, H. T. [1 ]
机构：
[1] Anyang Normal Univ, Dept Phys, Anyang 455000, Peoples R China
来源：
PHYSICAL REVIEW A | 2008年 / 77卷 / 05期
关键词：
D O I：
10.1103/PhysRevA.77.052105
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The multiparticle entanglement in the Lipkin-Meshkov-Glick model has been discussed extensively in this paper. Measured by the global entanglement and its generalization, our calculation shows that the multiparticle entanglement can faithfully detect quantum phase transitions. For an antiferromagnetic case the multiparticle entanglement reaches the maximum at the transition point, whereas for ferromagnetic coupling, two different behaviors of multiparticle entanglement can be identified, dependent on the anisotropic parameter in the coupling.
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页数：7
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