期刊
EPL
卷 102, 期 3, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1209/0295-5075/102/38004
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资金
- National Natural Science Foundation of China [21125313, 20933006, 91027012, 11205002]
- Key Scientific Research Fund of Anhui Provincial Education Department [KJ2012A189]
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. Copyright (C) EPLA, 2013
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