On Mutual Information in Multipartite Quantum States and Equality in Strong Subadditivity of Entropy
arXiv:quant-ph/0311193 · doi:10.1088/0305-4470/37/10/016
Abstract
The challenge of equality in the strong subadditivity inequality of entropy is approached via a general additivity of correlation information in terms of nonoverlapping clusters of subsystems in multipartite states (density operators). A family of tripartite states satisfying equality is derived.
8 pages; Latex2e and Revtex4