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Low-dimensional dynamics of populations of pulse-coupled oscillators

AuthorsPazó, Diego ; Montbrió, Ernest
Issue Date2014
PublisherAmerican Physical Society
CitationPhysical Review X 4: 011009 (2014)
AbstractLarge communities of biological oscillators show a prevalent tendency to self-organize in time. This cooperative phenomenon inspired Winfree to formulate a mathematical model that originated the theory of macroscopic synchronization. Despite its fundamental importance, a complete mathematical analysis of the model proposed by Winfree-consisting of a large population of all-to-all pulse-coupled oscillators-is still missing. Here, we show that the dynamics of the Winfree model evolves into the so-called Ott- Antonsen manifold. This important property allows for an exact description of this high-dimensional system in terms of a few macroscopic variables, and also allows for the full investigation of its dynamics. We find that brief pulses are capable of synchronizing heterogeneous ensembles that fail to synchronize with broad pulses, especially for certain phase-response curves. Finally, to further illustrate the potential of our results, we investigate the possibility of >chimera> states in populations of identical pulse-coupled oscillators. Chimeras are self-organized states in which the symmetry of a population is broken into a synchronous and an asynchronous part. Here, we derive three ordinary differential equations describing two coupled populations and uncover a variety of chimera states, including a new class with chaotic dynamics.
DescriptionThis article is available under the terms of the Creative Commons Attribution 3.0 License.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevX.4.011009
Identifiersdoi: 10.1103/PhysRevX.4.011009
issn: 2160-3308
Appears in Collections:(IFCA) Artículos
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