J. Phys. I France
Volume 5, Numéro 9, September 1995
Page(s) 1129 - 1134
DOI: 10.1051/jp1:1995186
J. Phys. I France 5 (1995) 1129-1134

A Probabilistic Cellular Automaton for Evolution

Nikolaus Rajewsky and Michael Schreckenberg

Institute for Theoretical Physics, University of Cologne, 50923 Köln, Germany

(Received 15 May 1995, received in final form 30 May 1995, accepted 6 June 1995)

We study two variants of a binary model for Darwinian Coevolution in an ecosystem of interacting species based on a model recently proposed by Bak and Sneppen [1]. We present results from a computer simulation and an improved mean-field calculation, including exponents, critical points and probability of certain spin configurations.

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