Majority-vote on undirected Barabasi-Albert networks

Details Majority-vote on undirected Barabasi-Albert networks Majority-vote on undirected Barabasi-Albert networks

2006-07-23

arxiv.org/abs/cond-mat/0607582v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

15 pages with numerous figures

Scientific paper

On Barabasi-Albert networks with z neighbours selected by each added site, the Ising model was seen to show a spontaneous magnetisation. This spontaneous magnetisation was found below a critical temperature which increases logarithmically with system size. On these networks the majority-vote model with noise is now studied through Monte Carlo simulations. However, in this model, the order-disorder phase transition of the order parameter is well defined in this system and this wasn't found to increase logarithmically with system size. We calculate the value of the critical noise parameter q_c for several values of connectivity $z$ of the undirected Barabasi-Albert network. The critical exponentes beta/nu, gamma/nu and 1/nu were calculated for several values of z.

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