Abrupt structural transitions involving functionally optimal networks

Details Abrupt structural transitions involving functionally optimal networks Abrupt structural transitions involving functionally optimal networks

2005-08-31

arxiv.org/abs/physics/0508228v1

Physics

Physics and Society

5 pages, 4 figures

Scientific paper

We show analytically that abrupt structural transitions can arise in functionally optimal networks, driven by small changes in the level of transport congestion. Our findings are based on an exactly solvable model system which mimics a variety of biological and social networks. Our results offer an explanation as to why such diverse sets of network structures arise in Nature (e.g. fungi) under essentially the same environmental conditions. As a by-product of this work, we introduce a novel renormalization scheme involving `cost motifs' which describes analytically the average shortest path across multiple-ring-and-hub networks.

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