Global spatiotemporal order and induced stochastic resonance due to a locally applied signal

A. Samoletov, M. Chaplain, V. Levi

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4 Citations (Scopus)

Abstract

We study the phenomenon of spatiotemporal stochastic resonance (STSR) in a chain of diffusively coupled bistable oscillators. In particular, we examine the situation in which the global STSR response is controlled by a locally applied signal and reveal a wave-front propagation. In order to deepen the understanding of the system dynamics, we introduce, on the time scale of STSR, the study of the effective statistical renormalization of a generic lattice system. Using this technique we provide a criterion for STSR, and predict and observe numerically a bifurcationlike behavior that reflects the difference between the most probable value of the local quasiequilibrium density and its mean value. Our results, tested with a chain of nonlinear oscillators, appear to possess some universal qualities and may stimulate a deeper search for more generic phenomena. © 2004 The American Physical Society
Original languageEnglish
JournalPhysical Review. E, Statistical, nonlinear, and soft matter physics
Volume69
Issue number4
DOIs
Publication statusPublished - Apr 2004

Keywords

  • Spatiotemporal stochastic resonance (STSR)

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