A spin-glass model of chemical evolution

Luca Peliti

Physica A: Statistical Mechanics and its Applications, 1990, vol. 168, issue 1, 619-625

Abstract: A model of reproducing protopolynucleotides, exhibiting Darwinian evolution, is introduced. Molecules replicate, undergo random mutations, and are selected according to a spin-glass-like fitness function. The simple case of a constant fitness function is solved exactly. The analogy between population averages in the model and thermal averages in spin glasses is highlighted, and the relevance of fluctuations of population averages is discussed. The main features of the evolutionary behavior of a molecular population undergoing natural selection are sketched.

Date: 1990
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:168:y:1990:i:1:p:619-625

DOI: 10.1016/0378-4371(90)90414-N

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