Physics – Physics and Society
Scientific paper
2005-04-22
Physica A 374, 449-456 (2007)
Physics
Physics and Society
4 pages, 5 figures, for similar work visit http://hsd.soc.cornell.edu and http://www.imedea.uib.es/physdept
Scientific paper
10.1016/j.physa.2006.06.018
Random links between otherwise distant nodes can greatly facilitate the propagation of disease or information, provided contagion can be transmitted by a single active node. However we show that when the propagation requires simultaneous exposure to multiple sources of activation, called multiplex propagation, the effect of random links is just the opposite: it makes the propagation more difficult to achieve. We calculate analytical and numerically critical points for a threshold model in several classes of complex networks, including an empirical social network.
Centola Damon
Eguiluz Victor M.
Macy Michael W.
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