Entanglement in thermal equilibrium states

被引：19
|
作者：
Osenda, O [1 ]
Raggio, GA [1 ]
机构：
[1] FaMAF UNC, Cordoba, Argentina
来源：
PHYSICAL REVIEW A | 2005年 / 72卷 / 06期
关键词：
Quantum theory;
D O I：
10.1103/PhysRevA.72.064102
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We reconsider the problem of entanglement of thermal equilibrium states of composite systems. We introduce characteristic, viz., critical, temperatures-and bounds for them-marking transitions from entanglement to separability, or vice versa. We present examples for the various possible thermal entanglement scenarios in bipartite qubit-qubit and qubit-qutrit systems.
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页数：4
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