Stochastic resonance in a model of opinion formation on small-world networks |
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| Authors: | M. Kuperman D. Zanette |
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| Affiliation: | (1) Centro Atómico Bariloche and Instituto Balseiro, 8400 S.C. de Bariloche, Argentina, AR;(2) Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina, AR |
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| Abstract: | We analyze the phenomenon of stochastic resonance in an Ising-like system on a small-world network. The system, which is subject to the combined action of noise and an external modulation, can be interpreted as a stylized model of opinion formation by imitation under the effects of a “fashion wave”. Both the amplitude threshold for the detection of the external modulation and the width of the stochastic-resonance peak show considerable variation as the randomness of the underlying small-world network is changed. Received 19 December 2001 |
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| Keywords: | PACS. 87.23.Ge Dynamics of social systems – 89.65.-s Social systems – 05.40.-a Fluctuation phenomena, random processes, noise, and Brownian motion |
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