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The index of a quantum dynamical semigroup

William Arveson

funct-anarXiv:funct-an/9705005

Abstract

A numerical index is introduced for semigroups of completely positive maps of B(H) which generalizes the index of E0-semigroups. It is shown that the index of a unital completely positive semigroup agrees with the index of its dilation to an E0-semigroup, provided that the dilation is minimal.

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