Asymptotic behaviour for a time-inhomogeneous Kolmogorov type diffusion

Pub Date : 2020-04-24 DOI:10.1051/ps/2022014
M. Gradinaru, Emeline Luirard
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引用次数: 3

Abstract

We study a kinetic stochastic model with a non-linear time-inhomogeneous drag force and a Brownian-type random force. More precisely, the Kolmogorov type diffusion [[EQUATION]] is considered : here [[EQUATION]] is the position of the particle and [[EQUATION]] is its velocity and is solution of a stochastic differential equation driven by a one-dimensional Brownian motion, with the drift of the form [[EQUATION]] . The function F satisfies some homogeneity condition and  [[EQUATION]] is positive. The behaviour of the process  in large time is proved by using stochastic analysis tools.
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时间非齐次Kolmogorov型扩散的渐近行为
研究了具有非线性时非均质阻力和布朗随机力的动力学随机模型。更精确地说,考虑Kolmogorov型扩散[[EQUATION]]:这里[[EQUATION]]是粒子的位置,[[EQUATION]]是粒子的速度,是由一维布朗运动驱动的随机微分方程的解,其漂移形式为[[EQUATION]]。函数F满足齐次性条件,且[[EQUATION]]为正。利用随机分析工具证明了该过程在大时间内的行为。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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