A pde approach to small stochastic perturbations of Hamiltonian flows
A pde approach to small stochastic perturbations of Hamiltonian flows
复制标题
哈密顿流小随机扰动的偏微分方程方法
DOI:
10.1016/j.jde.2011.08.036
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发表时间:
2012
期刊:
影响因子:
--
通讯作者:
H. Ishii
中科院分区:
文献类型:
--
作者:
Sasano;M.;Nishioka;H.;Okuyama S.;Nakazawa K.;Makishima K.;YamadaS.;Yuasa T.;Kataoka J.;Fukazawa Y.;Hanabata Y. & Hayashi K;H. Ishii
In this note we present a unified approach, based on pde methods, for the study of averaging principles for (small) stochastic perturbations of Hamiltonian flows in two space dimensions. Such problems were introduced by Freidlin and Wentzell and have been the subject of extensive study in the last few years using probabilistic arguments. When the Hamiltonian flow has critical points, it exhibits complicated behavior near the critical points under a small stochastic perturbation. Asymptotically the slow (averaged) motion takes place on a graph. The issues are to identify both the equations on the sides and the boundary conditions at the vertices of the graph. Our approach is very general and applies also to degenerate anisotropic elliptic operators which could not be considered using the previous methodology.
影响因子:
0.6
作者:
R. Sowers
通讯作者:
R. Sowers
影响因子:
1.4
作者:
M. Freidlin;Matthias Weber
通讯作者:
M. Freidlin;Matthias Weber
影响因子:
7.3
作者:
R. Sowers
通讯作者:
R. Sowers