Quantum discord in three-spin XXZ chain with three-spin interaction
Quantum discord in three-spin XXZ chain with three-spin interaction
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DOI：
10.1007/s11433-012-4800-z
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发表时间：
2012-06
期刊：
影响因子：
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通讯作者：
Haidi Yue;Yong Zhang;Jian Gong
中科院分区：
文献类型：
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作者：
Haidi Yue;Yong Zhang;Jian Gong
量子不和谐作为量子关联的一种度量，自提出以来一直受到人们的关注。本文研究了三自旋相互作用下三自旋XXZ链中的量子不协调。研究了铁磁区J =−1中各种参数对量子不和谐的影响。三自旋相互作用可能会增加两个自旋之间的量子不协调值，而各向异性可能会降低该值。此外，在模型中还发现了量子不和谐随温度的再生长。在零温时，存在量子相变。
Quantum discord, as a kind of measurement of quantum correlation, has received much attention since it was introduced. This paper focuses on studying quantum discord in three-spin XXZ chain with three-spin interaction. The effects of all kinds of parameters on quantum discord in the ferromagnetic regionJ=−1 are studied. The three-spin interaction may increase the value of quantum discord between two spins, while the anisotropy may decrease the value. In addition, the regrowth of quantum discord with temperature is found in the model. For zero temperature, quantum phase transition is existent.