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arXiv:quant-ph/0603127 · Journal of Physics A Mathematical and General

General pure multipartite entangled states and the Segre variety

Hoshang Heydari

Published Jul 19, 2006• 14 citations
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Abstract

We construct a measure of entanglement by generalizing the quadric polynomial of the Segre variety for general multipartite states. This measure of entanglement works for any pure state and vanishes on multipartite product states. We give explicit expressions for general pure three-partite and four-partite states, and compare our measure of entanglement with the generalized concurrence.

DOI
10.1088/0305-4470/39/31/013

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