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QP-PQ, quantum probability and white noise analysis

On a class of generalised Evans-Hudson flows related to classical Markov processes

Anilesh Mohari, Kalyanapuram Rangachari Parthasarathy

Published Jul 1, 1992• 5 citations
Publisher
DOI
10.1142/9789814354783_0016

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We consider the GNS Hilbert space H of a uniformly hyper-finite C * -algebra and study a class of unbounded Lindbladian arises from commutators.Exploring the local structure of UHF algebra, we have shown that the associated Hudson-Parthasarathy type quantum stochastic differential equation admits a unitary solution.The vacuum expectation of homomorphic cocycle, implemented by the Hudson-Parthasarathy flow, is conservative and gives the minimal semi-group associated with the formal Lindbladian.We also associate conservative minimal semi-groups to another class of Lindbladian by solving the corresponding Evan-Hudson equation.

arXiv:1505.05296•Communications on Stochastic Analysis•Sep 1, 2015•0 citations
It is well-known3,5 that Brownian motion and Poisson process arise naturally from the canonical commutation relations (CCR) of free field operators in a boson Fock space. Eyre and Hudson2 have recently shown how to construct fields of operators in a boson Fock space obeying super Lie commutation relations. We establish the essential self-adjointness of their real and imaginary parts on the domain ∊, the linear manifold generated by all the exponential (coherent) vectors and determine a family of Markov processes which they give rise to in a natural manner. These Markov processes yield examples of Evans–Hudson flows3,5 and Azéma-like martingales.1,4,6
We consider the GNS Hilbert space H of a uniformly hyper-finite C * -algebra and study a class of unbounded Lindbladian arises from commutators.Exploring the local structure of UHF algebra, we have shown that the associated Hudson-Parthasarathy type quantum stochastic differential equation admits a unitary solution.The vacuum expectation of homomorphic cocycle, implemented by the Hudson-Parthasarathy flow, is conservative and gives the minimal semi-group associated with the formal Lindbladian.We also associate conservative minimal semi-groups to another class of Lindbladian by solving the corresponding Evan-Hudson equation.