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Quantum coherences, K-way negativities and multipartite entanglement | | S. Shelly Sharma
; N. K. Sharma
; | | Date: |
9 Jul 2007 | | Abstract: | A characterization of N-partite states, based on K-way (K = 2 to N)
negativities, is proposed. The K-way partial transpose with respect to a
subsystem is defined so as to shift the focus to K-way coherences instead of K
subsystems of the composite system. For an N-partite system the fraction of
K-way negativity, contributing to global negativity, is obtained. The
entanglement measures for a given state ${
ho}$ are identified as the
fractional K-way negativities of the corresponding canonical state. | | Source: | arXiv, arxiv.0707.1164 | | Services: | Forum | Review | PDF | Favorites | |
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