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Two-state theory of nonlinear stochastic resonance

Opened Access Two-state theory of nonlinear stochastic resonance

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Autor: Casado Pascual, Jesús
Gómez Ordóñez, José
Morillo Buzón, Manuel
Departamento: Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Fecha: 2003-11-21
Publicado en: Physical Review Letters, 91 (21), 210601-1-210601-4.
Tipo de documento: Artículo
Resumen: 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.
Cita: 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.
Tamaño: 108.3Kb
Formato: PDF

URI: http://hdl.handle.net/11441/62707

DOI: 10.1103/PhysRevLett.91.210601

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