Bounds for the Transition Density of Time-Homogeneous Diffusion Processes

Details Bounds for the Transition Density of Time-Homogeneous Diffusion Processes Bounds for the Transition Density of Time-Homogeneous Diffusion Processes

2008-07-29

arxiv.org/abs/0807.4586v1

Mathematics

Probability

14 pages, 5 figures

Scientific paper

The paper presents new simple sharp bounds for transition density functions for time-homogeneous diffusions processes. The bounds are obtained under mild conditions on the drift and diffusion coefficients, extending and substantially improving previous results in the literature which were limited to drifts satisfying a linear growth condition. They lead to an asymptotic expression for the transition density as the transition time approaches zero. While the focus is on the one-dimensional case, an extension to multiple dimensions is discussed. Results are illustrated by numerical examples.

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