Journal
PHYSICAL REVIEW E
Volume 62, Issue 1, Pages 299-302Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevE.62.299
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We show that, for periodically driven noisy underdamped bistable systems, an intrawell stochastic resonance can exist, together with the conventional interwell stochastic resonance, resulting in a double maximum in the power spectral amplitude at the forcing frequency as a function of the noise intensity. The locations of the maxima correspond to matchings of deterministic and stochastic time scales in the system. In this paper we present experimental evidence of these phenomena and a phemonological nonadiabatic description in terms of a noise-controlled nonlinear dynamic resonance.
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