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arXiv · 0812.4453

Entanglement and permutational symmetry

Geza Toth·Otfried Gühne
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Abstract

We study the separability of permutationally symmetric quantum states. We show that for bipartite symmetric systems most of the relevant entanglement criteria coincide. However, we provide a method to generate examples of bound entangled states in symmetric systems, for the bipartite and the multipartite case. These states shed some new light on the nature of bound entanglement.

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Geza Toth, Otfried Gühne. 2009-05-12. Entanglement and permutational symmetry. https://doi.org/10.1103/physrevlett.102.170503

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