Criticality of rumor propagation on small-world networks

Details Criticality of rumor propagation on small-world networks Criticality of rumor propagation on small-world networks

2001-09-04

arxiv.org/abs/cond-mat/0109049v1

Physics

Condensed Matter

Statistical Mechanics

4 pages, 4 figures

Scientific paper

We show that a simple model for the propagation of a rumor on a small-world network exhibits critical behavior at a finite randomness of the underlying graph. The transition occurs between a regime where the rumor "dies" in a small neighborhood of its origin, and a regime where it spreads over a finite fraction of the whole population. Critical exponents are evaluated through finite-size scaling analysis, and the dependence of the critical randomness with the network connectivity is studied. The behavior of this system as a function of the network randomness bears noticeable similarities with an epidemiological model reported recently [M. Kuperman and G. Abramson, Phys. Rev. Lett. 86, 2909 (2001)], in spite of substantial differences in the respective dynamical rules.

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