Entanglement of two-qubit quantum Heisenberg XYZ chain

被引：0

作者：

Xi, XQ ^{[1
]}

Hao, SR

Chen, WX

Yue, RH

机构：

[1] NW Univ Xian, Inst Modern Phys, Xian 710069, Peoples R China

[2] Xian Inst Posts & Telecommun, Fundamental Dept, Xian 710061, Peoples R China

来源：

CHINESE PHYSICS LETTERS | 2002年 / 19卷 / 08期

关键词：

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We derive the analytic expression of the concurrence in the quantum Heisenberg XYZ model and discuss the influence of parameters J, Delta and Gamma on the concurrence. By choosing different values of Gamma and Delta, we obtain the XX, XY, XXX and XXZ chains. The concurrence decreases with increasing temperature. When T --> 0, the concurrence reaches its maximum value 1, i.e. the entangled state, \Psi> = root2/2(\01> - \10>), is maximum entanglement. For the XXZ chain, when Gamma --> infinity, the concurrence will meet its maximum value C-max = sinh(1/T)/cosh(1/T).

引用

页码：1044 / 1047

页数：4

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