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论文类型： 期刊论文

发表时间： 2011-04-01

发表刊物： CHINESE PHYSICS B

收录刊物： Scopus、SCIE、EI、ISTIC

卷号： 20

期号： 4

ISSN号： 1674-1056

关键字： quantum discord; thermal equilibrium state; Heisenberg model; Dzyaloshinski-Moriya interaction

摘要： 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.