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Published on: September 21, 2017
Universality of synchrony: critical behavior in a discrete model of stochastic phase-coupled oscillators
Kevin Wood1, C Van den Broeck, R Kawai
1Department of Chemistry and Biochemistry and Institute for Nonlinear Science, University of California-San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0340, USA.
Abstract:
We present the simplest discrete model to date that leads to synchronization of stochastic phase-coupled oscillators. In the mean field limit, the model exhibits a Hopf bifurcation and global oscillatory behavior as coupling crosses a critical value. When coupling between units is strictly local, the model undergoes a continuous phase transition which we characterize numerically using finite-size scaling analysis. In particular, the onset of global synchrony is marked by signatures of the XY universality class, including the appropriate classical exponents beta and nu, a lower critical dimension d(lc) = 2, and an upper critical dimension d(uc) = 4.
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