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Heterogeneous mean-field theory and the dynamics on scale-free networks.

. Abstract Book of the XXIII IUPAP International Conference on Statistical Physics, Genova, Italy, (9-13 July 2007)

Zusammenfassung

Scale-free networks are characterized by strong fluctuations of node connectivities that profoundly affect dynamical processes occurring on them. Usual simple mean-field treatments are not sufficient to deal with these fluctuations and need to be modified to explictly take into account the dependence on the degree, leading to nontrivial heterogeneous mean-field theories. We discuss the application and the limits of validity of heterogeneous mean-field theory for absorbing phase-transitions, as the contact process, and for ordering phenomena as the voter model and Glauber dynamics at zero temperature.

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