Coupling-enhanced stochastic resonance.
basic_science · Level V
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- Record sourced from PubMed, PMID 29347595.
- Also identified by DOI 10.1103/PhysRevE.96.042214.
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Abstract
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.