title: Phase chaos in coupled oscillators.
abstract: A complex high-dimensional chaotic behavior, phase chaos, is found in the finite-dimensional Kuramoto model of coupled phase oscillators. This type of chaos is characterized by half of the spectrum of Lyapunov exponents being positive and the Lyapunov dimension equaling almost the total system dimension. Intriguingly, the strongest phase chaos occurs for intermediate-size ensembles. Phase chaos is a common property of networks of oscillators of very different natures, such as phase oscillators, limit-cycle oscillators, and chaotic oscillators, e.g., Rössler systems.
authors.affiliation: Institute of Medicine and Virtual Institute of Neuromodulation, Research Centre Jülich, 52425 Jülich, Germany.
authors.forename: Oleksandr V
authors.initials: OV
authors.lastname: Popovych
authors.forename: Yuri L
authors.initials: YL
authors.lastname: Maistrenko
authors.forename: Peter A
authors.initials: PA
authors.lastname: Tass