Term Structure Models Driven by Wiener Process and Poisson Measures: Existence and Positivity

Details Term Structure Models Driven by Wiener Process and Poisson Measures: Existence and Positivity Term Structure Models Driven by Wiener Process and Poisson Measures: Existence and Positivity

2009-05-09

arxiv.org/abs/0905.1413v1

Mathematics

Probability

Scientific paper

In the spirit of Bj\"ork-DiMasi-Kabanov-Runggaldier, we investigate term structure models driven by Wiener process and Poisson measures with forward curve dependent volatilities. This includes a full existence and uniqueness proof for the corresponding Heath--Jarrow--Morton type term structure equation. Furthermore, we characterize positivity preserving models by means of the characteristic coefficients, which was open for jump-diffusions. Additionally we treat existence, uniqueness and positivity of the Brody-Hughston equation of interest rate theory with jumps, an equation which we believe to be very useful for applications. A key role in our investigation is played by the method of the moving frame, which allows to transform the Heath--Jarrow--Morton--Musiela equation to a time-dependent SDE.

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