Genuine tripartite entanglement monotone of $(2\otimes 2\otimes n)-$ dimensional systems

Details Genuine tripartite entanglement monotone of $(2\otimes 2\otimes n)-$ dimensional systems Genuine tripartite entanglement monotone of $(2\otimes 2\otimes n)-$ dimensional systems

2008-02-14

arxiv.org/abs/0802.1975v1

Phys. Rev. A 77, 022313 (2008)

Physics

Quantum Physics

5 pages

Scientific paper

10.1103/PhysRevA.77.022313

A genuine tripartite entanglement monotone is presented for $(2\otimes 2\otimes n)$-dimensional tripartite pure states by introducing a new 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.

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