Entanglement properties in mixed spin-(1,s) systems

Huaixiang Huang, Xiaoguang Wang, Zhe Sun and Guohong Yang

Physica A: Statistical Mechanics and its Applications, 2008, vol. 387, issue 12, 2736-2744

Abstract: We obtain an exact expression of the negativity for SU(2)-invariant bipartite spin-(1,s) states via the partial time reversal method. Studies of thermal states show that the threshold temperature of entanglement may be arbitrary high when s is sufficient large, indicating that the entanglement is very robust against temperature. Negativities in bilinear-biquadratic system are also considered.

Keywords: Entanglement; Time reversal; Negativity; SU(2); Spin (search for similar items in EconPapers)
Date: 2008
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:387:y:2008:i:12:p:2736-2744

DOI: 10.1016/j.physa.2008.01.092

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