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Pairwise Entanglement and Quantum Phase Transitions in Spin Systems |
| GU Shi-Jian1;TIAN Guang-Shan1,2;LIN Hai-Qing1 |
| 1Department of Physics and Institute of Theoretical Physics, The Chinese University of Hong Kong, Hong Kong2School of Physics, Peking University, Beijing 100871 |
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| Cite this article: |
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GU Shi-Jian, TIAN Guang-Shan, LIN Hai-Qing 2007 Chin. Phys. Lett. 24 2737-2740 |
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Abstract We examine several well-known quantum spin models and categorize
the behaviour of pairwise entanglement at quantum phase transitions. A
unified picture on the connection between the entanglement and quantum
phase transition in spin systems is presented.
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| Keywords:
03.67.Mn
03.65.Ud
05.70.Jk
73.43.Nq
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Received: 12 June 2007
Published: 20 September 2007
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| PACS: |
03.67.Mn
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(Entanglement measures, witnesses, and other characterizations)
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03.65.Ud
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(Entanglement and quantum nonlocality)
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05.70.Jk
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(Critical point phenomena)
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73.43.Nq
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(Quantum phase transitions)
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