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Percolation and epidemics in a two-dimensional small world

M. E. J. Newman, I. Jensen, R. M. Ziff

cond-mat.stat-mecharXiv:cond-mat/0108542

Abstract

Percolation on two-dimensional small-world networks has been proposed as a model for the spread of plant diseases. In this paper we give an analytic solution of this model using a combination of generating function methods and high-order series expansion. Our solution gives accurate predictions for quantities such as the position of the percolation threshold and the typical size of disease outbreaks as a function of the density of "shortcuts" in the small-world network. Our results agree with scaling hypotheses and numerical simulations for the same model.

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