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首页> 外文期刊>Infinite dimensional analysis, quantum probability, and related topics >Lagrangian and hamiltonian feynman formulae for some feller semigroups and their perturbations
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Lagrangian and hamiltonian feynman formulae for some feller semigroups and their perturbations

机译:一些倒半群的拉格朗日和哈密顿费曼公式及其摄动

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摘要

A Feynman formula is a representation of a solution of an initial (or initial-boundary) value problem for an evolution equation (or, equivalently, a representation of the semigroup resolving the problem) by a limit of n-fold iterated integrals of some elementary functions as n → ∞. In this note we obtain some Feynman formulae for a class of semigroups associated with Feller processes. Finite-dimensional integrals in the Feynman formulae give approximations for functional integrals in some Feynman-Kac formulae corresponding to the underlying processes. Hence, these Feynman formulae give an effective tool to calculate functional integrals with respect to probability measures generated by these Feller processes and, in particular, to obtain simulations of Feller processes..
机译:Feynman公式是某个基本方程的n倍迭代积分的极限,它表示演化方程的初始(或初边界)值问题的解决方案(或等效地表示解决问题的半群的表示)作为n→∞在本说明中,我们获得了一些与Feller过程相关的半群类的Feynman公式。 Feynman公式中的有限维积分给出了与基础过程相对应的某些Feynman-Kac公式中的功能积分的近似值。因此,这些Feynman公式提供了一种有效的工具,可以针对这些Feller过程生成的概率测度计算函数积分,尤其是获得Feller过程的模拟。

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