Phys. Rev. E 72, 057102 (2005) [4 pages]Enhanced synchronizability by structural perturbationsReceived 9 July 2005; published 18 November 2005 In this Brief Report, we investigate the collective synchronization of a system of coupled oscillators on a Barabási-Albert scale-free network. We propose an approach of structural perturbations aiming at those nodes with maximal betweenness. This method can markedly enhance the network synchronizability, and is easy to realize. The simulation results show that the eigenratio will sharply decrease by one-half when only 0.6% of those hub nodes occur under three-division processes when the network size N=2000. In addition, the present study also provides numerical evidence that the maximal betweenness plays a major role in network synchronization. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevE.72.057102
DOI:
10.1103/PhysRevE.72.057102
PACS:
89.75.−k, 05.45.Xt
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