Stochastic Resonance in an opinion model: influence of the lattice.

M. CECILIA GIMÉNEZ; ANA PAMELA PAZ GARCÍA; LUIS REINAUDI

Buenos Aires

Congreso; Statphys 27; 2019

UBA

We analize a simple model of opinion dynamics in which a two-state agent voter model evolves under the influence of a periodic signal and some stochastic noise which mimics a social temperature.  The agents may adopt decisions between two possibilities, according to the voter model with a varying probability. The external force represents the influence of propaganda.  By means of computer simulations we have shown influence of social contagious and  external propaganda, finding a stochastic resonance-like phenomenon when we depict  the noise-to-signal ratio as a function of the social temperature.  In addition, we have also studied the effects of the subyacent lattice and the contagious probability on the opinion formation dynamics.  Comparison with real data from surveys is also taken into account.