Dual Stochastic Transformations of Solvable Diffusions

Giuseppe Campolieti; Roman N. Makarov

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arXiv · 0907.2926

Dual Stochastic Transformations of Solvable Diffusions

Giuseppe Campolieti·Roman N. Makarov

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Abstract

We present new extensions to a method for constructing several families of solvable one-dimensional time-homogeneous diffusions whose transition densities are obtainable in analytically closed-form. Our approach is based on a dual application of the so-called diffusion canonical transformation method that combines smooth monotonic mappings and measure changes via Doob-h transforms. This gives rise to new multi-parameter solvable diffusions that are generally divided into two main classes; the first is specified by having affine (linear) drift with various resulting nonlinear diffusion coefficient functions, while the second class allows for several specifications of a (generally nonlinear) diffusion coefficient with resulting nonlinear drift function. The theory is applicable to diffusions with either singular and/or non-singular endpoints. As part of the results in this paper, we also present a complete boundary classification and martingale characterization of the newly developed diffusion families.

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Giuseppe Campolieti, Roman N. Makarov. 2009-07-16. Dual Stochastic Transformations of Solvable Diffusions. https://arxiv.org/abs/0907.2926

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