Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2009-08-24
Phys. Rev. E 80, 026202 (2009)
Physics
Condensed Matter
Disordered Systems and Neural Networks
19 pages, 1 figure
Scientific paper
10.1103/PhysRevE.80.026202
The behavior of weakly coupled self-sustained oscillators can often be well described by phase equations. Here we use the paradigm of Kuramoto phase oscillators which are coupled in a network to calculate first and second order corrections to the frequency of the fully synchronized state for nonidentical oscillators. The topology of the underlying coupling network is reflected in the eigenvalues and eigenvectors of the network Laplacian which influence the synchronization frequency in a particular way. They characterize the importance of nodes in a network and the relations between them. Expected values for the synchronization frequency are obtained for oscillators with quenched random frequencies on a class of scale-free random networks and for a Erd\H{o}s-R\'enyi random network. We briefly discuss an application of the perturbation theory in the second order to network structural analysis.
Blasius Bernd
Toenjes Ralf
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