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quant-ph2004
Complex multi-projective variety and entanglement
Hoshang Heydari, Gunnar Björk
In this paper, we will show that a vanishing generalized concurrence of a separable state can be seen as an algebraic variety called the Segre variety. This variety define a quadri…
quant-ph2004
Entanglement tensor for a general pure multipartite quantum state
Hoshang Heydari, Gunnar Björk
We propose an entanglement tensor to compute the entanglement of a general pure multipartite quantum state. We compare the ensuing tensor with the concurrence for bipartite state a…