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This article is cited in 1 scientific paper (total in 1 paper)
Dilations à la Quantum Probability of Markov Evolutions in Discrete Time
M. Gregoratti Politecnico di Milano
Abstract:
We study the classical probability analogue of the unitary dilations of a quantum dynamical semigroup in quantum probability. Given a (not necessarily homogeneous) Markov chain in discrete time in a finite state space $E$, we introduce a second system, an environment, and a deterministic invertible time-homogeneous global evolution of the system $E$ with this environment such that the original Markov evolution of $E$ is realized by a proper choice of the initial random state of the environment. We also compare these dilations with the unitary dilations of a quantum dynamical semigroup in quantum probability: given a classical Markov semigroup, we show that it can be extended to a quantum dynamical semigroup for which we can find a quantum dilation to a group of $*$-automorphisms admitting an invariant abelian subalgebra where this quantum dilation gives just our classical dilation.
Keywords:
Markov chain, quantum dynamical semigroup, unitary dilation.
Received: 06.03.2007
Citation:
M. Gregoratti, “Dilations à la Quantum Probability of Markov Evolutions in Discrete Time”, Teor. Veroyatnost. i Primenen., 54:1 (2009), 191–201; Theory Probab. Appl., 54:1 (2010), 140–150
Linking options:
https://www.mathnet.ru/eng/tvp2555https://doi.org/10.4213/tvp2555 https://www.mathnet.ru/eng/tvp/v54/i1/p191
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