arXiv:cond-mat/9612196 Abstract

arXiv:cond-mat/9612196Abstract References Reviews Resources

Sensitivity to Initial Conditions and Nonextensivity in Biological Evolution

Francisco A. Tamarit, Sergio A. Cannas, Constantino Tsallis

Published 1996-12-20Version 1

We consider biological evolution as described within the Bak and Sneppen 1993 model. We exhibit, at the self-organized critical state, a power-law sensitivity to the initial conditions, calculate the associated exponent, and relate it to the recently introduced nonextensive thermostatistics. The scenario which here emerges without tuning strongly reminds that of the tuned onset of chaos in say logistic-like onedimensional maps. We also calculate the dynamical exponent z.

Comments: 9 pages (RevTex), 3 PS figures

Categories: cond-mat.stat-mech, q-bio

Keywords: initial conditions, biological evolution, nonextensivity, logistic-like onedimensional maps, power-law sensitivity

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