Threshold-diversity-induced resonance

Hanshuang Chen, Zhonghuai Hou and Houwen Xin

Physica A: Statistical Mechanics and its Applications, 2009, vol. 388, issue 12, 2299-2305

Abstract: The effect of diversity on a system of coupled threshold elements is investigated, where each element is driven by a common periodic signal. Diversity is introduced to the system by assuming that the thresholds of all units are heterogeneous, e.g. the thresholds follow a Gaussian or other distribution. A combined numerical and analytical approach shows that the response of the system to the input signal is maximized at a moderate value of the diversity amplitude, which is similar to the well-known stochastic resonance phenomenon induced by noise. Our findings exhibit that the diversity, a kind of spatial disorder, may play a similar role to noise as a kind of temporal disorder.

Keywords: Diversity; Stochastic resonance; Noise; Complex network (search for similar items in EconPapers)
Date: 2009
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:388:y:2009:i:12:p:2299-2305

DOI: 10.1016/j.physa.2009.02.024

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