 98260 J. Andries, M. De Cock, M. Fannes
 The Entropy of an Irreversible Quantum Dynamics
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Apr 8, 98

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Abstract. We consider an irreversible quantum dynamical system that mimics the
classical phase doubling map $z\mapsto z^2$ on the unit circle and study
its ergodic properties. The main result of the paper is the computation of
the dynamical entropy ($\log 2$) using compact perturbations of unity as
operational partitions of unity.
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