Synchronisation Properties of Trees in the Kuramoto Model

Abstract

We consider the Kuramoto model of coupled oscillators, specifically the case of tree networks, for which we prove a simple closed-form expression for the critical coupling. For several classes of tree, and for both uniform and Gaussian vertex frequency distributions, we provide tight closed form bounds and empirical expressions for the expected value of the critical coupling. We also provide several bounds on the expected value of the critical coupling for all trees. Finally, we show that for a given set of vertex frequencies, there is a rearrangement of oscillator frequencies for which the critical coupling is bounded by the spread of frequencies.

21 pages, 19 Figures

References in corpus (4)

• Synchronization in complex networks
• Critical phenomena in complex networks
• Global phase-locking in finite populations of phase-coupled oscillators
• Fully Synchronous Solutions and the Synchronization Phase Transition for the Finite N Kuramoto Model

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