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Title: Mean first passage time approach to the problem of optimal barrier subdivision for Kramer's escape rate
Authors: Bekele, Mulugeta
Ananthakrishna, G.
Kumar, N.
Keywords: Kramer's escape rate
Activated processes
Reaction rates
Blow torch
Issue Date: Aug-1999
Publisher: Elsevier B.V.
Citation: Physica A: Statistical Mechanics and its Applications, 1999, Vol.270, p149-158
Abstract: We consider the effect of subdividing the potential barrier along the reaction coordinate on Kramer's escape rate for a model potential. Using the known supersymmetric potential approach, we show the existence of an optimal number of subdivisions that maximizes the rate. We cast the problem as a mean first passage time problem of a biased random walker and obtain equivalent results. We briefly summarize the results of our investigation on the increase in the escape rate by placing a blow-torch in the unstable part of one of the potential wells.
Description: Restricted Access.
ISSN: 0378-4371
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Copyright: 1999 Elsevier B.V.
Appears in Collections:Research Papers (TP)

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