Schmidt number of pure states in bipartite quantum systems as an algebraic-geometric invariant
Abstract
Description
Our previous work about algebraic-geometric invariants of the mixed states are extended and a stronger separability criterion is given. We also show that the Schmidt number of pure states in bipartite quantum systems, a classical concept, is actually an algebraic-geometric invariant.
8 pages, no figure, minor changes in v2
8 pages, no figure, minor changes in v2