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Stochastic resonance in a trapping overdamped monostable system.

Authors
  • Agudov, N V
  • Krichigin, A V
  • Valenti, D
  • Spagnolo, B
Type
Published Article
Journal
Physical Review E
Publisher
American Physical Society (APS)
Publication Date
May 01, 2010
Volume
81
Issue
5 Pt 1
Pages
51123–51123
Identifiers
PMID: 20866201
Source
Medline
License
Unknown

Abstract

The response of a trapping overdamped monostable system to a harmonic perturbation is analyzed, in the context of stochastic resonance phenomenon. We consider the dynamics of a Brownian particle moving in a piecewise linear potential with a white Gaussian noise source. Based on linear-response theory and Laplace transform technique, analytical expressions of signal-to-noise ratio (SNR) and signal power amplification (SPA) are obtained. We find that the SNR is a nonmonotonic function of the noise intensity, while the SPA is monotonic. Theoretical results are compared with numerical simulations.

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