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.
URI:	http://hdl.handle.net/2289/3206
ISSN:	0378-4371
Alternative Location:	http://dx.doi.org/10.1016/S0378-4371(99)00138-7
Copyright:	1999 Elsevier B.V.
Appears in Collections:	Research Papers (TP)

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