https://doi.org/10.1140/epjb/e2009-00071-1
Stochastic resonance in extended systems
An overview of recent results for systems with and without nonequilibrium potential
1
Instituto de Física de Cantabria, Universidad de
Cantabria & CSIC, 39005 Santander, Spain
2
Departamento de Física, Facultad de Ciencias
Exactas y Naturales, Universidad Nacional de Mar del Plata &
CONICET, Deán Funes 3350, 7600 Mar del Plata, Argentina
Corresponding author: a wio@ifca.unican.es
Received:
18
November
2008
Revised:
26
January
2009
Published online:
3
March
2009
Here, three highly nontrivial instances are briefly discussed, showing both the degree of maturity achieved by the field of stochastic resonance (SR) and the wealth of potential realizations of SR in extended systems: (1) a “bound” KPZ system, for which the knowledge of its nonequilibrium potential (NEP) makes simple the solution of a very complex problem; (2) the Ising-Bloch front bifurcation in an activator-inhibitor system, a case of SR between moving fronts of opposite chirality; (3) a spatiotemporally chaotic “toy model”, useful for climate research, exhibiting internal SR due to chaos suppression.
PACS: 05.40.Ca – Noise / 05.45.-a – Nonlinear Dynamics and Chaos / 82.40.Ck – Pattern formation in reactions with diffusion, flow and heat transfer
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2009
