Stability and bifurcation for the Kuramoto model

Published version
Repository DOI

Type
Article
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Authors
Dietert, Helge 
Abstract

We study the mean-field limit of the Kuramoto model of globally coupled oscillators. By studying the evolution in Fourier space and understanding the domain of dependence, we show a global stability result. Moreover, we can identify function norms to show damping of the order parameter for velocity distributions and perturbations in Wⁿ,¹ for n > 1. Finally, for sufficiently regular velocity distributions we can identify exponential decay in the stable case and otherwise identify finitely many eigenmodes. For these eigenmodes we can show a center-unstable manifold reduction, which gives a rigorous tool to obtain the bifurcation behaviour. The damping is similar to Landau damping for the Vlasov equation.

Description

This is the final version of the article. It first appeared from Elsevier via http://dx.doi.org/10.1016/j.matpur.2015.11.001

Keywords
4901 Applied Mathematics, 49 Mathematical Sciences
Journal Title
Journal de Mathématiques Pures et Appliquées
Conference Name
Journal ISSN
0021-7824
Volume Title
105
Publisher
Elsevier BV