Effects of mass media on opinion spreading in the Sznajd sociophysics model

Abstract

In this work we consider the influence of mass media in the dynamics of the two-dimensional Sznajd model. This influence acts as an external field, and it is introduced in the model by means of a probability $p$ of the agents to follow the media opinion. We performed Monte Carlo simulations on square lattices with different sizes, and our numerical results suggest a change on the critical behavior of the model, with the absence of the usual phase transition for $p>\sim 0.18$. Another effect of the probability $p$ is to decrease the average relaxation times $\tau$, that are log-normally distributed, as in the standard model. In addition, the $\tau$ values depend on the lattice size $L$ in a power-law form, $\tau \sim L^{\alpha }$, where the power-law exponent depends on the probability $p$.

11 pages, 8 figures, to appear in Physica A

References in corpus (6)

• Statistical physics of social dynamics
• Sociophysics: A review of Galam models
• Sznajd model and its applications
• Effects of Mass Media and Cultural Drift in a Model for Social Influence
• Effects of Mass Media action on the Axelrod Model with Social Influence
• Consequence of reputation in the Sznajd consensus model

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