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arXiv 0801.3314math.PR
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与分数布朗运动有关的某些过程的占据密度

Occupation densities for certain processes related to fractional Brownian motion

Khalifa Es-Sebaiy, David Nualart, Youssef Ouknine, Ciprian Tudor

摘要:

本文证明了两类随机过程的平方可积〔的〕的存在性。首先考虑具有绝对连续随机漂移的高斯过程,其次考虑具有Hurst参数$H>\frac 12$的分数阶布朗运动的(Skorohod)积分.这些结果的证明使用了基于Malliavin演算技巧的平方可积〔的〕存在性的一般判据。

英文摘要:

In this paper we establish the existence of a square integrable occupation density for two classes of stochastic processes. First we consider a Gaussian process with an absolutely continuous random drift, and secondly we handle the case of a (Skorohod) integral with respect to the fractional Brownian motion with Hurst parameter $H>\frac 12$. The proof of these results uses a general criterion for the existence of a square integrable local time, which is based on the techniques of Malliavin calculus.

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