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Indexed by:期刊论文

Date of Publication:2008-02-01

Journal:PHYSICAL REVIEW A

Included Journals:SCIE

Volume:77

Issue:2

ISSN No.:1050-2947

Abstract:A genuine tripartite entanglement monotone is presented for (2 circle times 2 circle times n)-dimensional tripartite pure states, obtained by introducing an entanglement measure for bipartite pure states. As an application, we consider the genuine tripartite entanglement of the ground state of the exactly solvable isotropic spin-1/2 chain with three-spin interaction. It is shown that the singular behavior of the genuine tripartite entanglement exactly signals a quantum phase transition.