Eur. Phys. J. B 74, 211-215 (2010)
https://doi.org/10.1140/epjb/e2010-00084-7

System size stochastic resonance in driven finite arrays of coupled bistable elements

Física Teórica, Facultad de Física, Universidad de Sevilla, Apartado de Correos 1065, 41080 Sevilla, Spain

Corresponding author: morillo@us.es

Received: 10 November 2009
Revised: 1 February 2010
Published online: 9 March 2010

Abstract

The global response to weak time periodic forces of an array of noisy, coupled nonlinear systems might show a nonmonotonic dependence on the number of units in the array. This effect has been termed system size stochastic resonance by other authors. In this paper, we focus on a collective variable of a finite array of one-dimensional globally coupled bistable elements. We analyze the possible nonmonotonic dependence on the system size of its power spectral amplification and its signal-to-noise ratio.