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Title: Spontaneous formation of dynamical groups in an adaptive networked system
Authors: Li, M. 
Guan, S. 
Lai, C.-H. 
Issue Date: 19-Oct-2010
Citation: Li, M., Guan, S., Lai, C.-H. (2010-10-19). Spontaneous formation of dynamical groups in an adaptive networked system. New Journal of Physics 12 : -. ScholarBank@NUS Repository.
Abstract: In this work, we investigate a model of an adaptive networked dynamical system, where the coupling strengths among phase oscillators coevolve with the phase states. It is shown that in this model the oscillators can spontaneously differentiate into two dynamical groups after a long time evolution. Within each group, the oscillators have similar phases, while oscillators in different groups have approximately opposite phases. The network gradually converts from the initial random structure with a uniform distribution of connection strengths into a modular structure that is characterized by strong intra-connections and weak inter-connections. Furthermore, the connection strengths follow a power-law distribution, which is a natural consequence of the coevolution of the network and the dynamics. Interestingly, it is found that if the inter-connections are weaker than a certain threshold, the two dynamical groups will almost decouple and evolve independently. These results are helpful in further understanding the empirical observations in many social and biological networks. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
Source Title: New Journal of Physics
ISSN: 13672630
DOI: 10.1088/1367-2630/12/10/103032
Appears in Collections:Staff Publications

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