arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2009.00103nlin.CD
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Kuramoto模型中混合的不稳定性:从分叉到模式

Instability of mixing in the Kuramoto model: From bifurcations to patterns

Hayato Chiba, Georgi S. Medvedev, Matthew S. Mizuhara

摘要:

我们研究的模式后观察到的混合的稳定性损失的仓本模型的耦合相位振荡器的随机固有频率的大型图形,这也可以是随机的。我们表明,紧急模式形成通过两个独立的机制所确定的形状的频率分布和限制结构的基础图形序列。具体来说,我们确定了两个嵌套的特征值问题,其特征向量(不稳定模式)确定的新生模式的结构。的分析说明了数值实验的结果与仓本模型的单峰和双峰的频率分布在某些图形。

英文摘要:

We study patterns observed right after the loss of stability of mixing in the Kuramoto model of coupled phase oscillators with random intrinsic frequencies on large graphs, which can also be random. We show that the emergent patterns are formed via two independent mechanisms determined by the shape of the frequency distribution and the limiting structure of the underlying graph sequence. Specifically, we identify two nested eigenvalue problems whose eigenvectors (unstable modes) determine the structure of the nascent patterns. The analysis is illustrated with the results of the numerical experiments with the Kuramoto model with unimodal and bimodal frequency distributions on certain graphs.

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