Decoherence of quantum Markov semigroups
Decompositions of Beurling type for E₀-semigroups
We define tensor product decompositions of E₀-semigroups with a structure analogous to a classical theorem of Beurling. Such decompositions can be characterized by adaptedness and exactness of unitary cocycles. For CCR-flows we show that such cocycles are convergent.
Dilation of a class of quantum dynamical semigroups with unbounded generators on UHF algebras