Pairwise entanglement of two impurities in the XY model

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• 作者：Yi Sun^a ; ^b ; Xuchu Huang^a ; ^{hxuchu@163.com} ; Guanghui Min^c
• 关键词：Impurity effect ; Quantum phase transition ; Pairwise entanglement
• 刊名：Physics Letters A
• 出版年：2017
• 出版时间：30 January 2017
• 年：2017
• 卷：381
• 期：4
• 页码：387-391
• 全文大小：876 K
• 卷排序：381

文摘

By introducing a proper displacement quantity of impurity, this method can be applied in complex spin model. The pairwise entanglement of impurities can be controlled by the coupling and anisotropy of impurity. The singular behaviors of the pairwise entanglement are closely related to the particle excitation.