Monogamy of quantum correlations in the one-dimensional anisotropic XY model

被引：7
作者：
Xu Shuai [1 ]
Song Xue-Ke [1 ]
Ye Liu [1 ]
机构：
[1] Anhui Univ, Sch Phys & Mat Sci, Hefei 230039, Peoples R China
来源：
CHINESE PHYSICS B | 2014年 / 23卷 / 01期
基金：
高等学校博士学科点专项科研基金; 中国国家自然科学基金;
关键词：
monogamy relation; geometric quantum discord; entanglement of formation; entropy quantum discord; ENTANGLEMENT; STATE;
D O I：
10.1088/1674-1056/23/1/010302
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In this paper, the monogamy properties of some quantum correlations, including the geometric quantum discord, concurrence, entanglement of formation and entropy quantum discord, in the anisotropic spin-1/2 XY model with staggered Dzyaloshinskii-Moriya (DM) interaction have been investigated using the quantum renormalization group (QRG) method. We summarize the monogamy relation for different quantum correlation measures and make an explicit comparison. Through mathematical calculations and analysis, we obtain that no matter whether the QRG steps are carried out, the monogamy of the given states are always unaltered. Moreover, we conclude that the geometric quantum discord and concurrence obey the monogamy property while other quantum correlation measures, such as entanglement of formation and quantum discord, violate it for this given model.
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页数：6
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