The effect of the anisotropy of the interaction of a spin chain in the XXZ Heisenberg model on the concurrence of the states of neighboring sites is studied. When anisotropy increases, the maximum concurrence in a magnetic field increases above the value reached in the absence of the field. The maximum magnetic field allowing entanglement is linearly related to the anisotropy parameter.
机构:
Zhejiang Univ, Zhejiang Inst Modern Phys, Hangzhou 310027, Peoples R China
Zhejiang Univ, Dept Phys, Hangzhou 310027, Peoples R China
Beijing Computat Sci Res Ctr, Beijing 100193, Peoples R ChinaZhejiang Univ, Zhejiang Inst Modern Phys, Hangzhou 310027, Peoples R China
Wu, Wei
Xu, Jing-Bo
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Zhejiang Univ, Zhejiang Inst Modern Phys, Hangzhou 310027, Peoples R China
Zhejiang Univ, Dept Phys, Hangzhou 310027, Peoples R ChinaZhejiang Univ, Zhejiang Inst Modern Phys, Hangzhou 310027, Peoples R China
机构:
Shandong Provincial Key Laboratory of Laser Polarization and Information Technology,Department of Physics,Qufu Normal UniversityShandong Provincial Key Laboratory of Laser Polarization and Information Technology,Department of Physics,Qufu Normal University
陈士荣
夏云杰
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Shandong Provincial Key Laboratory of Laser Polarization and Information Technology,Department of Physics,Qufu Normal UniversityShandong Provincial Key Laboratory of Laser Polarization and Information Technology,Department of Physics,Qufu Normal University
夏云杰
满忠晓
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Shandong Provincial Key Laboratory of Laser Polarization and Information Technology,Department of Physics,Qufu Normal UniversityShandong Provincial Key Laboratory of Laser Polarization and Information Technology,Department of Physics,Qufu Normal University
机构:
Tomsk State Univ, Tomsk, Russia
RAN, Siberian Branch, Inst High Current Elect, Tomsk, RussiaTomsk State Univ, Tomsk, Russia
Bagrov, V. G.
Gitman, D. M.
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Tomsk State Univ, Tomsk, Russia
PN Labedev Phys Inst, Moscow, Russia
Univ Sao Paulo, Inst Phys, BR-05508 Sao Paulo, BrazilTomsk State Univ, Tomsk, Russia
Gitman, D. M.
Levin, A. D.
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Univ Sao Paulo, Inst Phys, BR-05508 Sao Paulo, BrazilTomsk State Univ, Tomsk, Russia
Levin, A. D.
Meireles, M. S.
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Univ Sao Paulo, Inst Phys, BR-05508 Sao Paulo, BrazilTomsk State Univ, Tomsk, Russia