title: Global spatiotemporal order and induced stochastic resonance due to a locally applied signal.
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.
authors.affiliation: Division of Mathematics, The SIMBIOS Centre, University of Dundee, Dundee DD1 4HN, Scotland, UK.
authors.forename: A
authors.initials: A
authors.lastname: Samoletov
authors.forename: M
authors.initials: M
authors.lastname: Chaplain
authors.forename: V
authors.initials: V
authors.lastname: Levi