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Surmounting Oscillating Barriers

Jörg Lehmann, Peter Reimann, Peter Hänggi

cond-mat.stat-mecharXiv:cond-mat/9911342

Abstract

Thermally activated escape over a potential barrier in the presence of periodic driving is considered. By means of novel time-dependent path-integral methods we derive asymptotically exact weak-noise expressions for both the instantaneous and the time-averaged escape rate. The agreement with accurate numerical results is excellent over a wide range of driving strengths and driving frequencies.

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