Social consensus through the influence of committed minorities

Details Social consensus through the influence of committed minorities Social consensus through the influence of committed minorities

2011-02-18

arxiv.org/abs/1102.3931v2

Phys. Rev. E 84, 011130 (2011)

Physics

Physics and Society

9 pages, 5 figures

Scientific paper

10.1103/PhysRevE.84.011130

We show how the prevailing majority opinion in a population can be rapidly reversed by a small fraction p of randomly distributed committed agents who consistently proselytize the opposing opinion and are immune to influence. Specifically, we show that when the committed fraction grows beyond a critical value p_c \approx 10%, there is a dramatic decrease in the time, T_c, taken for the entire population to adopt the committed opinion. In particular, for complete graphs we show that when p < p_c, T_c \sim \exp(\alpha(p)N), while for p > p_c, T_c \sim \ln N. We conclude with simulation results for Erd\H{o}s-R\'enyi random graphs and scale-free networks which show qualitatively similar behavior.

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