Issue |
Europhys. Lett.
Volume 57, Number 5, March 2002
|
|
---|---|---|
Page(s) | 765 - 771 | |
Section | Interdisciplinary physics and related areas of science and technology | |
DOI | https://doi.org/10.1209/epl/i2002-00529-8 | |
Published online | 01 September 2002 |
The Bak-Sneppen model on scale-free networks
1
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: yamir@ictp.trieste.it
Received:
24
August
2001
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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