Signal to Noise Ratio in Stochastic Resonance

A.K. CHATTAH; C.B. BRIOZZO; O. OSENDA; M.O. CÁCERES

INTERNATIONAL JOURNAL OF MODERN PHYSICS B

World Scientific Publishing Company

Año: 1996 vol. 10 p. 1085 - 1085

0217-9792

e solve the Fokker-Planck equation for an overdamped Brownian particle in a periodically forced bistable potential by means of the path integral method, obtaining the propagators in the steepest descent approximation. We compute the long tails asymptotic correlation functions, and the time averaged spectral density, wich allow us the inmediate calculation of the signal to noise ratio, a directly measurable quantity useful to characterize the phenomenon of stochastic resonance. Our numerical algorithm is fast and runs on a desktop computer and the results agree with experiments and with former theoretical calculations of the amplification factor .