Doubly Stochastic Resonance

Autor:	Alexei Zaikin, Jürgen Kurths, Lutz Schimansky-Geier
Rok vydání:	2000
Předmět:	Physics Quantum noise Shot noise Institut für Physik und Astronomie General Physics and Astronomy Multiplicative noise Nonlinear system symbols.namesake Additive white Gaussian noise Mean field theory Gaussian noise symbols Coherence (signal processing) Statistical physics
Zdroj:	Physical Review Letters. 85:227-231
ISSN:	1079-7114 0031-9007
DOI:	10.1103/physrevlett.85.227
Popis:	We report the effect of doubly stochastic resonance which appears in nonlinear extended systems if the influence of noise is twofold: A multiplicative noise induces bimodality of the mean field of the coupled network and an independent additive noise governs the dynamic behavior in response to small periodic driving. For optimally selected values of the additive noise intensity stochastic resonance is observed, which is manifested by a maximal coherence between the dynamics of the mean field and the periodic input. Numerical simulations of the signal-to-noise ratio and theoretical results from an effective two state model are in good quantitative agreement.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::847f4c4dc2f9410d9004b71b5e99692a https://doi.org/10.1103/physrevlett.85.227 Zobrazit plný text záznamu