Oscillations of complex networks

Details Oscillations of complex networks Oscillations of complex networks

2006-07-14

arxiv.org/abs/cond-mat/0607351v1

Physics

Condensed Matter

Statistical Mechanics

4 pages, 4 figures. submitted

Scientific paper

10.1103/PhysRevE.74.066104

A complex network processing information or physical flows is usually characterized by a number of macroscopic quantities such as the diameter and the betweenness centrality. An issue of significant theoretical and practical interest is how such a network responds to sudden changes caused by attacks or disturbances. By introducing a model to address this issue, we find that, for a finite-capacity network, perturbations can cause the network to \emph{oscillate} persistently in the sense that the characterizing quantities vary periodically or randomly with time. We provide a theoretical estimate of the critical capacity-parameter value for the onset of the network oscillation. The finding is expected to have broad implications as it suggests that complex networks may be structurally highly dynamic.

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