Stochastic averaging near homoclinic orbits via singular perturbations

Stochastic averaging near homoclinic orbits via singular perturbations
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通过奇异扰动在同宿轨道附近进行随机平均

DOI:
10.1007/978-94-010-0179-3_7
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发表时间:
2003
影响因子:
7.3
通讯作者:
R. Sowers
R. Sowers
中科院分区:
医学1区
文献类型:
--
作者:
R. Sowers

文献摘要

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我们概述了一个奇异摄动方法的图值随机平均结果的Freidlin-Wentzell和Freidlin-Weber。我们特别考虑Freidlin-Weber问题(双阱势中的牛顿粒子)。为了证明Freidlin-Weber收敛结果,我们通过同宿轨道附近的边界层偏微分方程发展了一个扰动测试函数。该偏微分方程的可解性与Freidlin-Wentzell的胶合条件等价。我们的计算细节将在其他地方出现。
We outline a singular-perturbations approach to the graph-valued stochastic averaging results of Freidlin-Wentzell and Freidlin-Weber. We specifically consider the Freidlin-Weber problem (a Newtonian particle in a double-well potential). To show the Freidlin-Weber convergence result, we develop a perturbed test function via a boundary-layer PDE near the homoclinic orbit. Solvability of this PDE is equivalent to the glueing conditions of Freidlin-Wentzell. Details of our calculations will appear elsewhere.