Self-organized Critical Model Of Biological Evolution
نویسندگان
چکیده
A punctuated equilibrium model of biological evolution with relative fitness between different species being the fundamental driving force of evolution is introduced. Mutation is modeled as a fitness updating cellular automaton process where the change in fitness after mutation follows a Gaussian distribution with mean x > 0 and standard deviation σ. Scaling behaviors are observed in our numerical simulation, indicating that the model is self-organized critical. Besides, the numerical experiment suggests that models with different x and σ belong to the same universality class. PACS numbers: 87.10.+e, 05.40.+j Typeset using REVTEX Present Address: School of Natural Sciences, Institute for Advanced Study, Olden Lane, Princeton, NJ 08540.
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