Title
High-dimensional Kuramoto models on Stiefel manifolds synchronize complex networks almost globally.
Abstract
The Kuramoto model of coupled phase oscillators is often used to describe synchronization phenomena in nature. Some applications, e.g., quantum synchronization and rigid-body attitude synchronization, involve high-dimensional Kuramoto models where each oscillator lives on the n-sphere or SO(n). These manifolds are special cases of the compact, real Stiefel manifold St(p,n). Using tools from optimization and control theory, we prove that the generalized Kuramoto model on St(p,n) converges to a synchronized state for any connected graph and from almost all initial conditions provided (p,n) satisfies p≤23n−1 and all oscillator frequencies are equal. This result could not have been predicted based on knowledge of the Kuramoto model in complex networks over the circle. In that case, almost global synchronization is graph dependent; it applies if the network is acyclic or sufficiently dense. This paper hence identifies a property that distinguishes many high-dimensional generalizations of the Kuramoto models from the original model.
Year
DOI
Venue
2020
10.1016/j.automatica.2019.108736
Automatica
Keywords
Field
DocType
Synchronization,Kuramoto model,Stiefel manifold,Multi-agent system,Decentralization,Networked robotics
Quantum,Synchronization,Mathematical optimization,Generalization,Stiefel manifold,Pure mathematics,Kuramoto model,Complex network,Connectivity,Manifold,Mathematics
Journal
Volume
Issue
ISSN
113
1
0005-1098
Citations 
PageRank 
References 
4
0.45
6
Authors
3
Name
Order
Citations
PageRank
johan markdahl1297.43
Johan Thunberg213819.15
Goncalves, J.340442.24