Hub Synchronization in Scale-Free Networks

Details Hub Synchronization in Scale-Free Networks Hub Synchronization in Scale-Free Networks

2010-05-20

arxiv.org/abs/1005.3803v3

Phys. Rev. E 82, 036201 (2010)

Nonlinear Sciences

Chaotic Dynamics

4 pages, 1 figure

Scientific paper

10.1103/PhysRevE.82.036201

Heterogeneity in the degree distribution is known to suppress global synchronization in complex networks of symmetrically coupled oscillators. Scale-free networks display a great deal of heterogeneity, containing a few nodes, termed hubs, that are highly connected, while most nodes receive only a few connections. Here, we show that a group of synchronized nodes may appear in scale-free networks: hubs undergo a transition to synchronization while the other nodes remain unsynchronized. This general phenomenon can occur even in the absence of global synchronization. Our results suggest that scale-free networks may have evolved to complement various levels of synchronization.

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