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Energetics of stochastic resonance.
MedLine Citation:
PMID:  22225390     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
In this paper, we discuss the motion of a Brownian particle in a double-well potential driven by a periodic force in terms of energies delivered by the periodic and the noise forces and energy dissipated into the viscous environment. It is shown that, while the power delivered by the periodic force to the Brownian particle is controlled by the strength of the noise, the power delivered by the noise itself is independent of the amplitude and frequency of the periodic force. The implications of this result for the mechanism of stochastic resonance in an equilibrium system is that it is not energy from the noise force which enhances a small periodic force, but rather an increase of energy delivered by the periodic force, regulated by the strength of the noise. We further re-evaluate the frequency dependence of stochastic resonance in terms of energetic terms including efficiency.
Authors:
Peter Jung; Fabio Marchesoni
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Chaos (Woodbury, N.Y.)     Volume:  21     ISSN:  1089-7682     ISO Abbreviation:  Chaos     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2012-01-09     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100971574     Medline TA:  Chaos     Country:  United States    
Other Details:
Languages:  eng     Pagination:  047516     Citation Subset:  IM    
Affiliation:
Department of Physics and Astronomy and Quantitative Biology Institute, Ohio University, Athens, Ohio 45701, USADepartment of Physics, University of Camerino, I-62032 Camerino, Italy.
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