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arXiv 1709.02685nlin.AOmath.DSmath.PR
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随机Kuramoto模型的规模效应

Finite-size effects in a stochastic Kuramoto model

Georg A. Gottwald

摘要:

我们提出了一个集体坐标的方法来研究集体行为的有限合奏$N$随机仓本振荡器使用两个自由度,一个描述的形状动力学的振荡器和一个描述他们的平均相位。与热力学极限$N\to\infty$相反,在热力学极限中,全局同步振子的集群的平均相位在时间上是恒定的,有限大小集群的平均相位经历布朗扩散,其方差与$1/N$成比例。我们的集体坐标方法定量地很好地捕捉到了这种有限尺寸效应。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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