Dykman, Mark and Mannella, R. and McClintock, Peter V. E. and Stocks, N. G. (1992) Phase shifts in stochastic resonance. Physical review letters, 68 (20). pp. 2985-2988. ISSN 1079-7114
Abstract
The response of an overdamped bistable system to a periodic force is investigated using linear-response theory and by analog electronic experiment. It is shown, both theoretically and experimentally that a phase lag phi exists between the force and the response, and that |phi| passes through a maximum when the noise intensity is tuned through the range where stochastic resonance occurs. These results clarify the interrelation between stochastic resonance a vonventional resonance phenomena, and confirm that stochastic resonance can usefully be treated by linear-response theory.