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Landau Damping in the Kuramoto Model

机译:仓本模型中的Landau阻尼

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摘要

We consider the Kuramoto model of globally coupled phase oscillators in its continuum limit, with individual frequencies drawn from a distribution with density of class (). A criterion for linear stability of the uniform stationary state is established which, for basic examples in the literature, is equivalent to the standard condition on the coupling strength. We prove that, under this criterion, the Kuramoto order parameter, when evolved under the full nonlinear dynamics, asymptotically vanishes (with polynomial rate n) for every trajectory issued from a sufficiently small perturbation. The proof uses techniques from the Analysis of PDEs and closely follows recent proofs of the nonlinear Landau damping in the Vlasov equation and Vlasov-HMF model.
机译:我们考虑连续耦合极限中的全局耦合相位振荡器的Kuramoto模型,其单个频率从密度为()的分布中得出。建立了均匀平稳状态线性稳定性的标准,对于文献中的基本示例,该标准等同于耦合强度的标准条件。我们证明,在此标准下,仓本阶参数在完全非线性动力学下演化时,对于由足够小的扰动发出的每个轨迹,渐近消失(多项式率为n)。该证明使用了来自PDE分析的技术,并且紧随Vlasov方程和Vlasov-HMF模型中非线性Landau阻尼的最新证明。

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