Escape from subcellular domains with randomly switching boundaries
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Published version
Author(s)
Bressloff, Paul C
Lawley, Sean D
Type
Journal Article
Abstract
Motivated by various cellular transport processes, we consider diffusion in a potential
and analyze the escape time to boundaries that randomly switch between absorbing and reflecting
states. Combining disparate tools from PDEs and probability theory, we study both (a) the escape
to the boundary in which the entire boundary switches and (b) the escape to one of N small pieces
of the boundary that each randomly switch. For (a), we show how the switching boundary affects
the classical rate of escape from a potential well. For (b), we significantly generalize a known result
for the gated narrow escape problem and give this result an intuitive probabilistic interpretation.
In both cases, our results illustrate the complementary perspectives that PDE and probabilistic
methods offer escape problems.
and analyze the escape time to boundaries that randomly switch between absorbing and reflecting
states. Combining disparate tools from PDEs and probability theory, we study both (a) the escape
to the boundary in which the entire boundary switches and (b) the escape to one of N small pieces
of the boundary that each randomly switch. For (a), we show how the switching boundary affects
the classical rate of escape from a potential well. For (b), we significantly generalize a known result
for the gated narrow escape problem and give this result an intuitive probabilistic interpretation.
In both cases, our results illustrate the complementary perspectives that PDE and probabilistic
methods offer escape problems.
Date Issued
2015-01
Date Acceptance
2015-10-02
Citation
SIAM: Multiscale Modeling and Simulation, 2015, 13 (4), pp.1420-1445
ISSN
1540-3459
Publisher
Society for Industrial and Applied Mathematics
Start Page
1420
End Page
1445
Journal / Book Title
SIAM: Multiscale Modeling and Simulation
Volume
13
Issue
4
Copyright Statement
c 2015 Society for Industrial and Applied Mathematics
Identifier
http://dx.doi.org/10.1137/15m1019258
Publication Status
Published
Date Publish Online
2015-12-03