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Indexed by:期刊论文

Date of Publication:2011-04-01

Journal:CHINESE PHYSICS B

Included Journals:Scopus、SCIE、EI、ISTIC

Volume:20

Issue:4

ISSN No.:1674-1056

Key Words:quantum discord; thermal equilibrium state; Heisenberg model; Dzyaloshinski-Moriya interaction

Abstract: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.