Feynman–Kac perturbation of $$C^*$$ C ∗ quantum stochastic flows

Alexander C. R. Belton () and Stephen J. Wills ()
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Alexander C. R. Belton: University of Plymouth
Stephen J. Wills: University College Cork

Indian Journal of Pure and Applied Mathematics, 2024, vol. 55, issue 3, 1062-1083

Abstract: Abstract The method of Feynman–Kac perturbation of quantum stochastic processes has a long pedigree, with the theory usually developed within the framework of processes on von Neumann algebras. In this work, the theory of operator spaces is exploited to enable a broadening of the scope to flows on $$C^*$$ C ∗ algebras. Although the hypotheses that need to be verified in this general setting may seem numerous, we provide auxiliary results that enable this to be simplified in many of the cases which arise in practice. A wide variety of examples is provided by way of illustration.

Keywords: Markovian cocycle; Quantum stochastic differential equation; Multiplier equation; Quantum exclusion process; Flows on universalC* algebras (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s13226-024-00648-7

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