title: Generating macroscopic chaos in a network of globally coupled phase oscillators.
abstract: We consider an infinite network of globally coupled phase oscillators in which the natural frequencies of the oscillators are drawn from a symmetric bimodal distribution. We demonstrate that macroscopic chaos can occur in this system when the coupling strength varies periodically in time. We identify period-doubling cascades to chaos, attractor crises, and horseshoe dynamics for the macroscopic mean field. Based on recent work that clarified the bifurcation structure of the static bimodal Kuramoto system, we qualitatively describe the mechanism for the generation of such complicated behavior in the time varying case.
authors.affiliation: School of Physics, Astronomy, & Computational Sciences, The Center for Neural Dynamics, George Mason University, Fairfax, Virginia 22030, USA. paso@gmu.edu
authors.forename: Paul
authors.initials: P
authors.lastname: So
authors.forename: Ernest
authors.initials: E
authors.lastname: Barreto