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Thermal Entanglement of XXZ Heisenberg Chain under Rectangle Magnetic Field

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Abstract

We study thermal entanglement of XXZ Heisenberg chain under rectangle magnetic field. Under this magnetic field B, the region of thermal entanglement in terms of B and temperature T can be extended. Moreover, one can improve threshold temperature, where entanglement vanish, just by increasing the strength of magnetic field. This effect is similar to that of the anisotropic coupling of spin in XY plane but provide us a realizable method to improve threshold temperature.

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Authors and Affiliations

  1. Department of Physics, Dalian University of Technology, Dalian, 116024, China

    Xin Yu Zhao & Ling Zhou

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  1. Xin Yu Zhao
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  2. Ling Zhou
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Correspondence to Xin Yu Zhao.

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Zhao, X.Y., Zhou, L. Thermal Entanglement of XXZ Heisenberg Chain under Rectangle Magnetic Field. Int J Theor Phys 46, 2437–2442 (2007). https://doi.org/10.1007/s10773-007-9360-z

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  • DOI: https://doi.org/10.1007/s10773-007-9360-z

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