Phase transitions, universality and superuniversality in mortality evolution

Azbel’, Mark Ya.

Physica A: Statistical Mechanics and its Applications, 1999, vol. 269, issue 2, 564-569

Abstract: The probability lx(x̄) to survive a given age x yields a phase transition at a certain value x∗ of the mean lifespan x̄. There the rate dlx(x̄)/dx̄ of the survival evolution has a jump. The critical x∗ is independent of age, population and living conditions. The dependence of lx(x̄) on x and x̄ is reduced to the functions of x only. They determine the universal lx(x̄), which for all x and x̄ agrees with experimental data without any adjustable parameters. In advanced and old age the functions of age are superuniversal – in dimensionless variables they are the same for species as remote as humans and flies. The implications of the presented results for evolution and genetics of mortality are discussed.

Keywords: Survival probability; Evolution; Singularity (search for similar items in EconPapers)
Date: 1999
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:269:y:1999:i:2:p:564-569

DOI: 10.1016/S0378-4371(99)00168-5

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