Nonnegative Feynman-Kac Kernels in Schrödinger's Interpolation Problem

Details Nonnegative Feynman-Kac Kernels in Schrödinger's Interpolation Problem Nonnegative Feynman-Kac Kernels in Schrödinger's Interpolation Problem

1995-07-05

arxiv.org/abs/quant-ph/9507002v1

J.Math.Phys. 38 (1997) 1-15

Physics

Quantum Physics

Latex file, 25 pp

Scientific paper

10.1063/1.532004

The existing formulations of the Schr\"{o}dinger interpolating dynamics, which is constrained by the prescribed input-output statistics data, utilize strictly positive Feynman-Kac kernels. This implies that the related Markov diffusion processes admit vanishing probability densities only at the boundaries of the spatial volume confining the process. We extend the framework to encompass singular potentials and associated nonnegative Feynman-Kac-type kernels. It allows to deal with general nonnegative solutions of the Schr\"{o}dinger boundary data problem. The resulting stochastic processes are capable of both developing and destroying nodes (zeros) of probability densities in the course of their evolution.

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