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Point cloud discretization of Fokker-Planck operators for committor functions

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Date
2017-04-23
Authors
Lai, R
Lu, J
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Abstract
The committor functions provide useful information to the understanding of transitions of a stochastic system between disjoint regions in phase space. In this work, we develop a point cloud discretization for Fokker-Planck operators to numerically calculate the committor function, with the assumption that the transition occurs on an intrinsically low-dimensional manifold in the ambient potentially high dimensional configurational space of the stochastic system. Numerical examples on model systems validate the effectiveness of the proposed method.
Type
Journal article
Subject
math.NA
math.NA
physics.chem-ph
65N99, 65D25, 60H10, 82C35
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https://hdl.handle.net/10161/14056
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Scholars@Duke

Lu

Jianfeng Lu

Professor of Mathematics
Jianfeng Lu is an applied mathematician interested in mathematical analysis and algorithm development for problems from computational physics, theoretical chemistry, materials science and other related fields.More specifically, his current research focuses include:Electronic structure and many body problems; quantum molecular dynamics; multiscale modeling and analysis; rare events and sampling techniques.
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