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arXiv 0906.3076math.PR
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分数白噪声驱动下heat equation的Feynman-Kac公式

Feynman-Kac formula for heat equation driven by fractional white noise

Yaozhong Hu, David Nualart, Jian Song

摘要:

我们建立了具有乘法分数布朗单的多维随机热方程的Feynman-Kac公式。利用Malliavin微积分技巧证明了Feynman-Kac公式定义的过程是随机热方程的弱解.从Feynman-Kac公式出发,我们建立了解的密度的光滑性和时空变量的Hölder正则性。我们还得到了一个Feynman-Kac公式的随机热方程在Skorokhod意义下,我们得到的Wiener混沌展开的解决方案。

英文摘要:

We establish a version of the Feynman-Kac formula for the multidimensional stochastic heat equation with a multiplicative fractional Brownian sheet. We use the techniques of Malliavin calculus to prove that the process defined by the Feynman-Kac formula is a weak solution of the stochastic heat equation. From the Feynman-Kac formula, we establish the smoothness of the density of the solution and the Hölder regularity in the space and time variables. We also derive a Feynman-Kac formula for the stochastic heat equation in the Skorokhod sense and we obtain the Wiener chaos expansion of the solution.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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