PMID: 11308937Apr 20, 2001Paper

Slow switching in globally coupled oscillators: robustness and occurrence through delayed coupling

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
Hiroshi Kori, Y Kuramoto

Abstract

The phenomenon of slow switching in populations of globally coupled oscillators is discussed. This characteristic collective dynamics, which was first discovered in a particular class of the phase oscillator model, is a result of the formation of a heteroclinic loop connecting a pair of clustered states of the population. We argue that the same behavior can arise in a wider class of oscillator models with the amplitude degree of freedom. We also argue how such heteroclinic loops arise inevitably and persist robustly in a homogeneous population of globally coupled oscillators. Although a heteroclinic loop might seem to arise only exceptionally, we find that it appears rather easily by introducing time delay into a population which would otherwise exhibit perfect phase synchrony. We argue that the appearance of the heteroclinic loop induced by the delayed coupling is then characterized by transcritical and saddle-node bifurcations. Slow switching arises when a system with a heteroclinic loop is weakly perturbed. This will be demonstrated with a vector model by applying weak noises. Other types of weak symmetry-breaking perturbations can also cause slow switching.

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Citations

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May 1, 2015·Scientific Reports·Sindre W HauglandKatharina Krischer
Jun 21, 2014·Neural Networks : the Official Journal of the International Neural Network Society·Takaaki Aoki
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Feb 9, 2005·Physical Review Letters·Hiroshi Kori, Alexander S Mikhailov
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Jan 8, 2016·Journal of Mathematical Neuroscience·Peter AshwinRachel Nicks
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May 16, 2007·Physical Review Letters·Hiroya NakaoYoji Kawamura
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Jul 16, 2013·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Amirkhan A TemirbayevMichael Rosenblum
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