| Issue |
Europhys. Lett.
Volume 72, Number 5, December 2005
|
|
|---|---|---|
| Page(s) | 851 - 857 | |
| Section | Interdisciplinary physics and related areas of science and technology | |
| DOI | https://doi.org/10.1209/epl/i2005-10299-3 | |
| Published online | 28 October 2005 | |
Spontaneous emergence of contrarian-like behaviour in an opinion spreading model
1
Instituto de Física de Cantabria (IFCA), CSIC-UC - E-39005 Santander, Spain
2
Departamento de Física Moderna, Universidad de Cantabria Avda. Los Castros, E-39005 Santander, Spain
3
Centro Atomico Bariloche and Instituto Balseiro 8400 San Carlos de Bariloche, Argentina
Received:
2
August
2005
Accepted:
30
September
2005
We introduce stochastic driving in the Sznajd model of opinion spreading. This stochastic effect is meant to mimic a social temperature, so that agents can take random decisions with a varying probability. We show that a stochastic driving has a tremendous impact on the system dynamics as a whole by inducing an order-disorder nonequilibrium phase transition. Interestingly, under certain conditions, this stochastic dynamics can spontaneously lead to agents in the system who are analogous to Galam's contarians.
PACS: 89.65.-s – Social and economic systems / 05.40.-a – Fluctuation phenomena, random processes, noise, and Brownian motion / 64.60.Ht – Dynamic critical phenomena
© EDP Sciences, 2005
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