arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1612.08548math-phcond-mat.stat-mechmath.APmath.MPnlin.SI
收藏

固定/移动边界含时系数Fokker-Planck方程的相似解

Similarity solutions of Fokker-Planck equation with time-dependent coefficients and fixed/moving boundaries

C. -L. Ho

摘要:

利用相似方法研究了漂移系数和扩散系数均随时间变化的Fokker-Planck方程的可解性。通过引入相似变量,将Fokker-Planck方程化为一个常微分方程。利用概率流密度在边界处为零的自然条件,证明了所得到的常微分方程是可积的,并给出了概率密度函数的封闭形式。精确可解的福克-普朗克方程的新的例子。

英文摘要:

We consider the solvability of the Fokker-Planck equation with both time-dependent drift and diffusion coefficients by means of the similarity method. By the introduction of the similarity variable, the Fokker-Planck equation is reduced to an ordinary differential equation. Adopting the natural requirement that the probability current density vanishes at the boundary, the resulting ordinary differential equation turns out to be integrable, and the probability density function can be given in closed form. New examples of exactly solvable Fokker-Planck equations are presented.

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。

↑