Tripartite thermal correlations in an inhomogeneous spin-star system

Details Tripartite thermal correlations in an inhomogeneous spin-star system Tripartite thermal correlations in an inhomogeneous spin-star system

2010-09-22

arxiv.org/abs/1009.4384v3

J. Phys. B: At. Mol. Opt. Phys. 43 (2010) 205501

Physics

Quantum Physics

8 pages, 9 figures

Scientific paper

We exploit the tripartite negativity to study the thermal correlations in a tripartite system, that is the three outer spins interacting with the central one in a spin-star system. We analyze the dependence of such correlations on the homogeneity of the interactions, starting from the case where central-outer spin interactions are identical and then focusing on the case where the three coupling constants are different. We single out some important differences between the negativity and the concurrence.

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