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Entanglement in SU(2)-invariant quantum systems: The positive partial transpose criterion and others

URN to cite this document:
urn:nbn:de:bvb:355-epub-282313
DOI to cite this document:
10.5283/epub.28231
Schliemann, John
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Date of publication of this fulltext: 22 May 2013 14:01


Abstract

We study entanglement in mixed bipartite quantum states which are invariant under simultaneous SU(2) transformations in both subsystems. Previous results on the behavior of such states under partial transposition are substantially extended. The spectrum of the partial transpose of a given SU(2)-invariant density matrix ρ is entirely determined by the diagonal elements of ρ in a basis of ...

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