Synchronized First-Passages in a Double-Well System

Mangal C. Mahato; A. M. Jayannavar

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arXiv · cond-mat/9509058

Synchronized First-Passages in a Double-Well System

Mangal C. Mahato·A. M. Jayannavar

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Abstract

We perform Langevin dynamic numerical simulation on a double-well potential system subjected to an asymmetric saw-tooth type external time varying field and white noise forces. The hysteresis loss calculated from the first-passage time distribution obtained shows asymmetric behaviour with respect to the asymmetry in the field sweep. The hysteresis loss, in our model, being a measure of the synchronized passages from one well to the other, indicates asymmetric "correlated" passages in the two opposing directions when driven by a temporally asymmetric external field in the presence of white noise (fluctuating) forces. The implication of our results on the phenomena of predominantly unidirectional motion of a Brownian particle in a symmetric periodic (nonratchet-like) potential is discussed.

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Mangal C. Mahato, A. M. Jayannavar. 1995-09-11. Synchronized First-Passages in a Double-Well System. https://arxiv.org/abs/cond-mat/9509058

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