English

Pair approximation for the noisy threshold $q$-voter model

Physics and Society 2020-05-28 v1 Statistical Mechanics

Abstract

In the standard qq-voter model, a given agent can change its opinion only if there is a full consensus of the opposite opinion within a group of influence of size qq. A more realistic extension is the threshold qq-voter, where a minimal agreement (at least 0<q0q0<q_0\le q opposite opinions) is sufficient to flip the central agent's opinion, including also the possibility of independent (non conformist) choices. Variants of this model including non-conformist behavior have been previously studied in fully connected networks (mean-field limit). Here we investigate its dynamics in random networks. Particularly, while in the mean-field case it is irrelevant whether repetitions in the influence group are allowed, we show that this is not the case in networks, and we study the impact of both cases, with or without repetition. Furthermore, the results of computer simulations are compared with the predictions of the pair approximation derived for uncorrelated networks of arbitrary degree distributions.

Keywords

Cite

@article{arxiv.2002.04715,
  title  = {Pair approximation for the noisy threshold $q$-voter model},
  author = {A. R. Vieira and Antonio F. Peralta and Raul Toral and Maxi San Miguel and C. Anteneodo},
  journal= {arXiv preprint arXiv:2002.04715},
  year   = {2020}
}

Comments

13 pages, 12 figures

R2 v1 2026-06-23T13:38:58.802Z