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Phase shifts in stochastic resonance.

Research output: Contribution to journalJournal article


<mark>Journal publication date</mark>18/05/1992
<mark>Journal</mark>Physical Review Letters
Number of pages4
<mark>Original language</mark>English


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.