Necesary and sufficient range-dimension conditions for bipartite quantum correlations
arXiv:quant-ph/0305173 · doi:10.1088/0305-4470/35/35/305
Abstract
Necessary and sufficient conditions for the existence of a composite-system statistical operator, and, separately, for the possibility of its being correlated or uncorrelated, are derived in terms of its range dimension and the range dimensions of its reduced statistical operators.
6 pages, Latex 2e