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Coupling-enhanced stochastic resonance

par Nicolis, C. ;Nicolis, Grégoire
Référence Physical Review E, 96, 4, 042214
Publication Publié, 2017-10

Article révisé par les pairs

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Résumé :

Stochastic resonance is analyzed in an array of nonlinear spatially coupled subsystems. Analytic expressions for the different steady-state solutions, for the rates of transitions between them in the presence of noise, and for the response to a weak external periodic forcing are derived. It is shown that the presence of spatial degrees of freedom modifies considerably the mechanisms of transitions between states and is responsible for a marked sensitivity of the response on the coupling constant and on the system size.