Existence of hysteresis in the Kuramoto model with bimodal frequency distributions

Details Existence of hysteresis in the Kuramoto model with bimodal frequency distributions Existence of hysteresis in the Kuramoto model with bimodal frequency distributions

2009-04-23

arxiv.org/abs/0904.3735v2

Nonlinear Sciences

Adaptation and Self-Organizing Systems

9 pages, 5 figures, to appear in Physical Review E

Scientific paper

We investigate the transition to synchronization in the Kuramoto model with bimodal distributions of the natural frequencies. Previous studies have concluded that the model exhibits a hysteretic phase transition if the bimodal distribution is close to a unimodal one, due to the shallowness the central dip. Here we show that proximity to the unimodal-bimodal border does not necessarily imply hysteresis when the width, but not the depth, of the central dip tends to zero. We draw this conclusion from a detailed study of the Kuramoto model with a suitable family of bimodal distributions.

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