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Fixed points and stability in the two-network frustrated Kuramoto model

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  • Kalloniatis, Alexander C.
  • Zuparic, Mathew L.

Abstract

We examine a modification of the Kuramoto model for phase oscillators coupled on a network. Here, two populations of oscillators are considered, each with different network topologies, internal and cross-network couplings and frequencies. Additionally, frustration parameters for the interactions of the cross-network phases are introduced. This may be regarded as a model of competing populations: internal to any one network phase synchronisation is a target state, while externally one or both populations seek to frequency synchronise to a phase in relation to the competitor. We conduct fixed point analyses for two regimes: one, where internal phase synchronisation occurs for each population with the potential for instability in the phase of one population in relation to the other; the second where one part of a population remains fixed in phase in relation to the other population, but where instability may occur within the first population leading to ‘fragmentation’. We compare analytic results to numerical solutions for the system at various critical thresholds.

Suggested Citation

  • Kalloniatis, Alexander C. & Zuparic, Mathew L., 2016. "Fixed points and stability in the two-network frustrated Kuramoto model," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 447(C), pages 21-35.
    • Handle: RePEc:eee:phsmap:v:447:y:2016:i:c:p:21-35
    DOI: 10.1016/j.physa.2015.11.021
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    References listed on IDEAS

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    1. Pluchino, Alessandro & Boccaletti, Stefano & Latora, Vito & Rapisarda, Andrea, 2006. "Opinion dynamics and synchronization in a network of scientific collaborations," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 372(2), pages 316-325.
    2. González-Avella, J.C. & Cosenza, M.G. & San Miguel, M., 2014. "Localized coherence in two interacting populations of social agents," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 399(C), pages 24-30.
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