Resonance induced by repulsive interactions in a model of globally coupled bistable systems

• Type: Article in International Scientific Journal
• Date: 2010

Authors

T. Vaz Martins (Author) FCUP; V.N. Livina (Author) Other; A.P. Majtey (Author) Other; R. Toral (Author) FCUP

Journal

Title: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics

Vol. 81 No. 4, Part 1

ISSN: 1539-3755

Publisher: American Physical Society

Indexing

ISI Web of Science

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Abstract (EN): We show the existence of a competition-induced resonance effect for a generic globally coupled bistable system. In particular, we demonstrate that the response of the macroscopic variable to an external signal is optimal for a particular proportion of repulsive links. Furthermore, we show that a resonance also occurs for other system parameters, like the coupling strength and the number of elements. We relate this resonance to the appearance of a multistable region, and we predict the location of the resonance peaks, by a simple spectral analysis of the Laplacian matrix.

Language: English

Type (Professor's evaluation): Scientific