Noise-Induced Linearisation and Delinearisation
MI Dykman, DG Luchinsky, R Mannella, PVE McClintock, HE Short, ND Stein, N G Stocks
Abstract
It is demonstrated, by means of analogue electronic simulation and theoretically, that external noise can markedly change the character of the response of a nonlinear system to a low-frequency periodic field. In general, noise of sufficient intensity linearises the response. For certain parameter ranges in particular cases, however, an increase in the noise intensity can sometime have the opposite effect and is shown to delinearise the response. The physical origins of these contrary behaviours are discussed.
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