Chimera states in a ring of nonlocally coupled oscillators

Daniel M. Abrams*, Steven H. Strogatz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

177 Scopus citations

Abstract

Arrays of identical limit-cycle oscillators have been used to model a wide variety of pattern-forming systems, such as neural networks, convecting fluids, laser arrays and coupled biochemical oscillators. These systems are known to exhibit rich collective behavior, from synchrony and traveling waves to spatiotemporal chaos and incoherence. Recently, Kuramoto and his colleagues reported a strange new mode of organization - here called the chimera state - in which coherence and incoherence exist side by side in the same system of oscillators. Such states have never been seen in systems with either local or global coupling; they are apparently peculiar to the intermediate case of nonlocal coupling. Here we give an exact solution for the chimera state, for a one-dimensional ring of phase oscillators coupled nonlocally by a cosine kernel. The analysis reveals that the chimera is born in a continuous bifurcation from a spatially modulated drift state, and dies in a saddle-node collision with an unstable version of itself.

Original languageEnglish (US)
Pages (from-to)21-37
Number of pages17
JournalInternational Journal of Bifurcation and Chaos
Volume16
Issue number1
DOIs
StatePublished - Jan 2006

Keywords

  • Oscillator
  • Synchronization

ASJC Scopus subject areas

  • Modeling and Simulation
  • Engineering (miscellaneous)
  • General
  • Applied Mathematics

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