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Decompositions of Beurling Type for E_0-Semigroups

Rolf Gohm
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Abstract

We define tensor product decompositions of $E_0$-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.

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Rolf Gohm. 2009-02-26. Decompositions of Beurling Type for E_0-Semigroups. https://arxiv.org/abs/math/0412107

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