Quasimonochromatic noise: New features of fluctuations in noise-driven nonlinear systems

The effects of Gaussian quasimonochromatic (narrow band) noise have been investigated with an analog electronic circuit model. The escape probability and the reciprocal mean time to reach the top of a potential barrier were found to differ exponentially strongly. An extremely steep statistical distribution was observed and is discussed. For systems fluctuating in a symmetric single-well potential the distribution was found to be independent of the shape of the potential.