Non-decomposable quantum dynamical semigroups and bound entangled states
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We use open quantum system techniques to construct one-parameter semigroups of positive maps and apply them to study the entanglement properties of a class of 16-dimensional density matrices, representing states of a 4x4 bipartite system.
15 pages, to appear on "Open systems & information dynamics", OSID style
15 pages, to appear on "Open systems & information dynamics", OSID style