Volume 57, Number 5, March 2002
|Page(s)||765 - 771|
|Section||Interdisciplinary physics and related areas of science and technology|
|Published online||01 September 2002|
The Bak-Sneppen model on scale-free networks
The Abdus Salam International Centre for
Theoretical Physics, Condensed Matter Group -
P.O. Box 586, Trieste, I-34014, Italy
2 International School for Advanced Studies (SISSA) - Trieste, Italy
Corresponding author: email@example.com
Accepted: 5 December 2001
We investigate by numerical simulations and analytical calculations the Bak-Sneppen model for biological evolution in scale-free networks. By using large-scale numerical simulations, we study the avalanche size distribution and the activity time behavior at nodes with different connectivities. We argue the absence of a critical barrier and its associated critical behavior for infinite-size systems. These findings are supported by a single-site mean-field analytic treatment of the model.
PACS: 89.75.-k – Complex systems / 05.65.+b – Self-organized systems / 87.23.-n – Ecology and evolution
© EDP Sciences, 2002
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