SELF-ORGANIZED CRITICALITY IN AN ASEXUAL MODEL?

Colin Chisholm, Naeem Jan (), Peter Gibbs and Ayşe Erzan
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Colin Chisholm: Department of Physics, St. Francis Xavier University, Antigonish, Canada
Naeem Jan: Department of Physics, St. Francis Xavier University, Antigonish, Canada
Peter Gibbs: Department of Computer Science, Mathematics and Physics, University of the West Indies, Cave Hill, Barbados
Ayşe Erzan: Department of Physics, Faculty of Sciences and Letters, Istanbul Technical University, Maslak 80626, Istanbul, Turkey;

International Journal of Modern Physics C (IJMPC), 2000, vol. 11, issue 06, 1257-1262

Abstract: Recent work has shown that the distribution of steady state mutations for an asexual "bacteria" model has features similar to that seen in Self-Organized Critical (SOC) sandpile model of Baket al.We investigate this coincidence further and search for "self-organized critical" state for bacteria but instead find that the SOC sandpile critical behavior is very sensitive; critical behavior is destroyed with small perturbations effectively when the absorption of sand is introduced. It is only in the limit when the length of the genome of the bacteria tends to infinity that SOC properties are recovered for the asexual model.

Keywords: Evolution; Bacteria; Self-Organized Systems; Sandpiles (search for similar items in EconPapers)
Date: 2000
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DOI: 10.1142/S0129183100001073

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