Mass media and repulsive interactions in continuous-opinion dynamics
IFISC (Instituto de Física Interdisciplinar y Sistemas Complejos), CSIC-UIB, Campus Universitat de les Illes Balears - E-07122 Palma de Mallorca, Spain, EU
2 Centro de Física do Porto, Departamento de Física e Astronomia, Faculdade de Ciências da Universidade do Porto 4169-007 Porto, Portugal, EU
3 Center for Nonlinear Phenomena and Complex Systems, Université Libre de Bruxelles - Code Postal 231, Campus Plaine, B-1050 Brussels, Belgium, EU
Accepted: 9 August 2010
This letter focuses on the effect of repulsive interactions on the adoption of an external message in an opinion model. With a simple change in the rules, we modify the Deffuant et al. model to incorporate the presence of repulsive interactions. We will show that information receptiveness is optimal for an intermediate fraction of repulsive links. Using the master equation as well as Monte Carlo simulations of the message-free model, we identify the point where the system becomes optimally permeable to external influence with an order-disorder transition.
PACS: 87.23.Ge – Dynamics of social systems / 87.23.Kg – Dynamics of evolution / 05.40.-a – Fluctuation phenomena, random processes, noise, and Brownian motion
© EPLA, 2010