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arXiv 2007.14077nlin.AO
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耦合振子的高阶相位约化

High-Order Phase Reduction for Coupled Oscillators

Erik Genge, Erik Teichmann, Michael Rosenblum, Arkady Pikovsky

摘要:

我们探讨了耦合振子网络中耦合参数高阶的相位缩减问题。对于耦合的Stuart-Landau振荡器,相位可以明确地引入,我们开发了一个分析微扰过程,允许获得的高阶近似明确。我们证明了这一点,推导出的二阶相位方程的网络的三个斯图尔特-朗道振荡器。对于系统的显式表达式的相位是不可用的,我们提出了一个数值方法,构造一个小网络的耦合单元的相动力学方程。我们将这种方法应用于三个范德波尔振荡器的网络,并揭示了组件的耦合与不同的缩放的相互作用强度。

英文摘要:

We explore the phase reduction in networks of coupled oscillators in the higher orders of the coupling parameter. For coupled Stuart-Landau oscillators, where the phase can be introduced explicitly, we develop an analytic perturbation procedure to allow for the obtaining of the higher-order approximation explicitly. We demonstrate this by deriving the second-order phase equations for a network of three Stuart-Landau oscillators. For systems where explicit expressions of the phase are not available, we present a numerical procedure that constructs the phase dynamics equations for a small network of coupled units. We apply this approach to a network of three van der Pol oscillators and reveal components in the coupling with different scaling in the interaction strength.

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