Thermal quantum discord in Heisenberg models with Dzyaloshinski-Moriya interaction

We study the quantum discord of the bipartite Heisenberg model with the Dzyaloshinski-Moriya （DM） interaction in thermal equilibrium state and discuss the effect of the DM interaction on the quantum discord. The quantum entanglement of the system is also discussed and compared with quantum discord....

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Bibliographic Details
Published inChinese physics B Vol. 20; no. 4; pp. 53 - 58
Main Author 王林成 闫俊彦 衣学喜
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.04.2011
Subjects
DM相互作用
平衡状态
海森堡模型
相互作用模型
量子纠缠
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Summary:We study the quantum discord of the bipartite Heisenberg model with the Dzyaloshinski-Moriya （DM） interaction in thermal equilibrium state and discuss the effect of the DM interaction on the quantum discord. The quantum entanglement of the system is also discussed and compared with quantum discord. Our results show that the quantum discord may reveal more properties of the system than quantum entanglement and the DM interaction may play an important role in the Heisenberg model.
Bibliography:quantum discord, thermal equilibrium state, Heisenberg model, Dzyaloshinski-Moriya interaction
O482.5
11-5639/O4
O482.51
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/20/4/040305