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General Properties of Thermal Entanglement in an Arbitrary-Length Heisenberg Spin Chain |
| ZHANG Ting;WU Wei;CHEN Ping-Xing;LI Cheng-Zu |
| Department of Physics, Science College, National University of Defense Technology, Changsha 410073 |
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| Cite this article: |
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ZHANG Ting, WU Wei, CHEN Ping-Xing et al 2007 Chin. Phys. Lett. 24 2167-2169 |
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Abstract We investigate general properties of thermal entanglement in arbitrary-length 1D Heisenberg spin-1/2 chain based on classifications of its eigenstates. The influences of magnetic field and temperature on entanglement are qualitatively discussed and three features are presented. The conclusions hold for both bipartite and multipartite entanglement, and are in agreement with the results numerically proven by Arnesen et al. [Phys. Rev. Lett. 59(2001)017901].
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| Keywords:
03.65.Ud
75.10.Jm
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Received: 16 April 2007
Published: 25 July 2007
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| PACS: |
03.65.Ud
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(Entanglement and quantum nonlocality)
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75.10.Jm
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(Quantized spin models, including quantum spin frustration)
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