A Pseudo-Differential Operator Construction of Markov Processes Using Feynman Path Integrals

Details A Pseudo-Differential Operator Construction of Markov Processes Using Feynman Path Integrals A Pseudo-Differential Operator Construction of Markov Processes Using Feynman Path Integrals

2012-04-25

arxiv.org/abs/1204.5624v1

Mathematics

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In this paper pseudo-differential operators with negative definite symbols are used to construct time- and space-inhomogeneous Markov processes. This is achieved by using the Markov evolution system associated with the fundamental solution of the corresponding pseudo-differential evolution equation. Negative definite symbols are non-standard and differ significantly from the class of H\"{o}rmander type symbols. The novelty of this work is the derivation and the representation of the fundamental solution as a Feynman path integral. This implies that the transition function of the constructed Markov process can be written as a pseudo-differential operator that has a Feynman path integral as its symbol.

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