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Characterizing entanglement by momentum jump in the frustrated Heisenberg ring at a quantum phase transition
Qian, XF; Shi, T; Li, Y; Song, Z; Sun, CP; Qian, XF , Nankai Univ, Dept Phys, Tianjin 30071, Peoples R China.
2005
发表期刊PHYSICAL REVIEW A
ISSN1050-2947
卷号72期号:1页码:-
摘要We study the pairwise concurrences, a measure of entanglement, of the ground states for the frustrated Heisenberg ring to explore the relation between entanglement and quantum phase transition associated with the momentum jump. The ground-state concurrences between any two sites are obtained analytically and numerically. It shows that the summation of all possible pairwise concurrences is an appropriate candidate to depict the phase transition. We also investigate the role that the momentum takes in the jump of concurrence at the critical points. We find that an abrupt momentum change results in the maximal concurrence difference of two degenerate ground states.
部门归属Nankai Univ, Dept Phys, Tianjin 30071, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Nearest-neighbor Interaction Linear Chain
学科领域Physics
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收录类别SCI
WOS记录号WOS:000230887300063
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/13790
专题理论物理所SCI论文
通讯作者Qian, XF , Nankai Univ, Dept Phys, Tianjin 30071, Peoples R China.
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Qian, XF,Shi, T,Li, Y,et al. Characterizing entanglement by momentum jump in the frustrated Heisenberg ring at a quantum phase transition[J]. PHYSICAL REVIEW A,2005,72(1):-.
APA Qian, XF,Shi, T,Li, Y,Song, Z,Sun, CP,&Qian, XF , Nankai Univ, Dept Phys, Tianjin 30071, Peoples R China..(2005).Characterizing entanglement by momentum jump in the frustrated Heisenberg ring at a quantum phase transition.PHYSICAL REVIEW A,72(1),-.
MLA Qian, XF,et al."Characterizing entanglement by momentum jump in the frustrated Heisenberg ring at a quantum phase transition".PHYSICAL REVIEW A 72.1(2005):-.
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