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arXiv · 1303.6764

Mobility-enhanced signal response in metapopulation networks of coupled oscillators

Chuansheng Shen·Hanshuang Chen·Zhonghuai Hou
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Abstract

We investigate the effect of mobility on the response of coupled oscillators to a subthreshold external signal in metapopulation networks, wherein each node represents a subpopulation with overdamped bistable oscillators that can randomly diffuse between nodes. With increasing mobility rate, the oscillators undergo transitions from intrawell to interwell motion, demonstrating clearly mobility-enhanced signal amplification. Moreover, the response shows nonmonotonic dependence on the mobility rate, i.e., a maximal gain occurs at a moderate level of mobility. This interesting phenomenon is robust against variations in the overall density, network size, as well as network topology. In addition, a simple mean-field analysis is carried out to qualitatively illustrate the simulation results.

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Chuansheng Shen, Hanshuang Chen, Zhonghuai Hou. 2013-03-27. Mobility-enhanced signal response in metapopulation networks of coupled oscillators. https://doi.org/10.1209/0295-5075%2F102%2F38004

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