Thermal quantum and total correlations in spin-1 bipartite system
Qiu Liang (仇亮)a, Ye Bin (叶宾)b
a College of Sciences, China University of Mining and Technology, Xuzhou 221116, China;
b School of Information and Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, China
Abstract Thermal quantum and total correlations of a two spin-1 Ising model in the presence of an external homogeneous magnetic field and the Dzyaloshinski-Moriya (DM) interaction are investigated. The result indicates that the DM interaction plays a leading role in the quantum correlation measured by measurement-induced disturbance except for the region with small DM interaction and low temperature, while the DM interaction and the external magnetic field play competing roles in the negativity. The thermal total correlations measured by an alternative new measure defined in terms of the Wigner-Yanase skew information and the quantum mutual information display differences in the same region.
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