arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2101.09330cond-mat.stat-mech
收藏

非线性Fokker-Planck方程的微观动力学

Microscopic Dynamics of Nonlinear Fokker-Planck Equations

Leonardo Santos

摘要:

提出了一种新的方法来描述(幂律)非线性Fokker-Planck方程的有效微观动力学。我们的形式主义是基于一个非广泛的推广的维纳过程。这使我们能够获得,除了重要的物理见解,几个分析结果非常简单。事实上,我们得到的非广泛版本的布朗自由粒子和Ornstein-Uhlenbeck过程的解析解,并解释异常扩散行为的记忆效应在非广泛的推广高斯白噪声。最后,我们应用发展的形式主义模型的热噪声在电路。

英文摘要:

We propose a new approach to describe the effective microscopic dynamics of (power-law) nonlinear Fokker-Planck equations. Our formalism is based on a nonextensive generalization of the Wiener process. This allow us to obtain, in addition to significant physical insights, several analytical results with great simplicity. Indeed, we obtain analytical solutions for a nonextensive version of Brownian free-particle and Ornstein-Uhlenbeck process, and explain anomalous diffusive behaviours in terms of memory effects in a nonextensive generalization of Gaussian white noise. Finally, we apply the develop formalism to model thermal noise in electric circuits.

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。

↑