A steady state network model with a 1/k scale-free degree distribution

Details A steady state network model with a 1/k scale-free degree distribution A steady state network model with a 1/k scale-free degree distribution

2006-03-08

arxiv.org/abs/cond-mat/0603199v1

Physics

Condensed Matter

Statistical Mechanics

4 pages, 3 figures

Scientific paper

Using a steady state process of node duplication and deletion we produce networks with 1/k scale-free degree distributions in the limit of vanishing connectance. This occurs even though there is no growth involved and inherent preferential attachment is counterbalanced by preferential detachment. The mean field evolution is considered and the 1/k law is verified under certain approximations. An ansatz for the degree distribution is proposed on the basis of symmetry considerations and is shown to coincide well with the simulation data. Distributional forms other than power law are also shown to arise when the condition of perfect duplication is relaxed.

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