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Entanglement Theory Quantum Correlations Quantum Thermodynamics

Genuine Multipartite Entanglement in the XY Model

arXiv
Authors: S. M. Giampaolo, B. C. Hiesmayr

Year

2013

Paper ID

32925

Status

Preprint

Abstract Read

~2 min

Abstract Words

102

Citations

N/A

Abstract

We analyze the XY model characterized by an anisotropy γ in an external magnetic field h with respect to its genuine multipartite entanglement content (in the thermodynamic and finite size case). Despite its simplicity we show that the quantity -detecting genuine multipartite entanglement through permutation operators and being a lower bound on measures- witnesses the presence of genuine multipartite entanglement for nearly all values of γ and h. We further show that the phase transition and scaling properties are fully characterized by this multipartite quantity. Consequently, we provide a useful toolbox for other condensed matter systems, where bipartite entanglement measures are known to fail.

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  • We analyze the XY model characterized by an anisotropy γ in an external magnetic field h with respect to its genuine multipartite entanglement content (in the thermodynamic and...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1309.0626 [2] arXiv https://arxiv.org/abs/1309.0626 [3] Publisher https://arxiv.org/abs/1309.0626

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