Effect of Landauer's blowtorch on the equilibration rate in a bistable potential

Details Effect of Landauer's blowtorch on the equilibration rate in a bistable potential Effect of Landauer's blowtorch on the equilibration rate in a bistable potential

1998-06-26

arxiv.org/abs/cond-mat/9806322v2

Physics

Condensed Matter

15 pages in LaTeX format and 6 figures in postscript E-Mail : polymer.physics.aau@telecom.net.et garani@mrc.iisc.ernet.in

Scientific paper

10.1103/PhysRevE.59.143

Kinetic aspect of Landauer's blowtorch effect is investigated for a model double-well potential with localized heating. Using the supersymmetric approach, we derive an approximate analytical expression for the equilibration rate as function of the strength, width and the position of the hot zone, and the barrier height. We find that the presence of the hot zone enhances the equilibration rate, which is found to be an increasing function of the strength and width of the hot zone. Our calculations also reveal an intriguing result, namely, that placing the hot zone away from the top of the potential barrier enhances the rate more than when it is placed close to it. A physically plausible explanation for this is attempted. The above analytical results are borne out by detailed numerical solution of the associated Smoluchowski equation for the inhomogeneous medium.

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