Article
Two-state theory of nonlinear stochastic resonance
Author/s | Casado Pascual, Jesús
Gómez Ordóñez, José Morillo Buzón, Manuel |
Department | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Publication Date | 2003-11-21 |
Deposit Date | 2017-07-19 |
Published in |
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Abstract | An amenable, analytical two-state description of the nonlinear population dynamics of a noisy bistable system driven by a rectangular subthreshold signal is put forward. Explicit expressions for the driven population ... An amenable, analytical two-state description of the nonlinear population dynamics of a noisy bistable system driven by a rectangular subthreshold signal is put forward. Explicit expressions for the driven population dynamics, the correlation function (its coherent and incoherent parts), the signal-to-noise ratio (SNR), and the stochastic resonance (SR) gain are obtained. Within a suitably chosen range of parameter values this reduced description yields anomalous SR gains exceeding unity and, simultaneously, gives rise to a nonmonotonic behavior of the SNR vs the noise strength. The analytical results agree well with those obtained from numerical solutions of the Langevin equation. |
Funding agencies | Ministerio de Ciencia y Tecnología (MCYT). España |
Project ID. | BFM2002- 03822 |
Citation | Casado Pascual, J., Gómez Ordóñez, J. y Morillo Buzón, M. (2003). Two-state theory of nonlinear stochastic resonance. Physical Review Letters, 91 (21), 210601-1-210601-4. |
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