Small mass asymptotic for the motion with vanishing friction

Small mass asymptotic for the motion with vanishing friction
复制标题

小质量渐近摩擦力消失的运动

DOI:
10.1016/j.spa.2012.08.013
复制
发表时间:
2012
影响因子:
1.4
通讯作者:
A. Wentzell
A. Wentzell
中科院分区:
数学3区
文献类型:
--
作者:
M. Freidlin;Wenqing Hu;A. Wentzell

文献摘要

被引文献

相似文献

我们考虑具有可变摩擦系数的朗之万方程的小质量渐近(Smoluchowski-Kramers近似)。假设摩擦系数在一定范围内为零。我们引入了这一问题的正则化,并研究了一维情形和一个多维模型问题的极限运动。极限运动是一个投影空间上的马尔可夫过程。我们给出了这个极限马尔可夫过程的生成元和边界条件,并证明了它的收敛性质。
We consider the small mass asymptotic (Smoluchowski–Kramers approximation) for the Langevin equation with a variable friction coefficient. The friction coefficient is assumed to be vanishing within certain region. We introduce a regularization for this problem and study the limiting motion for the 1-dimensional case and a multidimensional model problem. The limiting motion is a Markov process on a projected space. We specify the generator and the boundary condition of this limiting Markov process and prove the convergence.