Finite-size effects in a stochastic Kuramoto model

Georg A. Gottwald

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arXiv · 1709.02685

Finite-size effects in a stochastic Kuramoto model

Georg A. Gottwald

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Abstract

We present a collective coordinate approach to study the collective behaviour of a finite ensemble of $N$ stochastic Kuramoto oscillators using two degrees of freedom; one describing the shape dynamics of the oscillators and one describing their mean phase. Contrary to the thermodynamic limit $N\to\infty$ in which the mean phase of the cluster of globally synchronized oscillators is constant in time, the mean phase of a finite-size cluster experiences Brownian diffusion with a variance proportional to $1/N$. This finite-size effect is quantitatively well captured by our collective coordinate approach.

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Georg A. Gottwald. 2017-09-08. Finite-size effects in a stochastic Kuramoto model. https://arxiv.org/abs/1709.02685

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