INVESTIGADORES
REVELLI Jorge Alberto
artículos
Título:
Interplay between social debate and propaganda in an opinion formation model
Autor/es:
M. C. GIMENEZ, J. A. REVELLI; H. S.WIO
Revista:
PHYSICA A - STATISTICAL AND THEORETICAL PHYSICS
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2012 vol. 392 p. 278 - 286
ISSN:
0378-4371
Resumen:
We introduce a simple model of opinion dynamics in which a two-state agent modifiedSznajd model evolves due to the simultaneous action of stochastic driving and a periodicsignal. The stochastic effect mimics a social temperature, so the agents may adopt decisionsin support for or against some opinion or position, according to a modified Sznajd rulewith a varying probability. The external force represents a simplified picture by whichsociety feels the influence of the external effects of propaganda. By means of Monte Carlosimulations we have shown the dynamical interplay between the social condition or moodand the external influence, finding a stochastic resonance-like phenomenon when wedepict the noise-to-signal ratio as a function of the social temperature. In addition, we havealso studied the effects of the system size and the external signal strength on the opinionformation dynamics.
