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Lloyd Demetrius

Visiting Professor 1997-2000 Research scholar, Department of Organismic and Evolutionary Biology, Harvard University
The trailblazers in human, academic, scientific and religious freedom have always been in the minority… It will take such a small committed minority to work unrelentingly to win the uncommitted majority. Such a group may transform America’s greatest dilemma into her most glorious opportunity.
— Dr. Martin Luther King Jr.

Background

Lloyd Demetrius is a mathematician and theoretical biologist at the Max Planck Institute for Molecular Genetics in Berlin, Germany, and in the Department of Organismic and Evolutionary Biology at Harvard University. Demetrius earned a BA (1961) and MA (1964) in mathematics from Cambridge University in England, and a PhD (1967) from the University of Chicago.

Interests

Demetrius’ main research interests are the ergodic theory of dynamical systems and its applications to the analysis of biological processes at molecular, cellular and population levels; and quantum statistics as a formalism to investigate the dynamics of electron transport and proton transduction in cellular metabolism.

He is best known for the discovery of evolutionary entropy, a statistical parameter that characterizes Darwinian fitness in models of evolutionary processes at various levels of biological organization – molecular, organismic and cultural. Demetrius has also pioneered the application of the methodology of quantum mechanics to the study of allometric relations between metabolic rate and generation time in cells. This work is the mathematical basis for the analysis of cancer and neurodegenerative disorders as metabolic and bioenergetic diseases.

Sample Work

  • Publication

    Game theory and evolution: finite size and absolute fitness measures

    Demetrius, L. and Gundlach, V.M. (2000): Game theory and evolution: finite size and absolute fitness measures. Mathematical Biosciences, 168: 9 – 38 .

  • Publication

    Directionality principles in thermodynamics and evolution

    Demetrius, L. (1997): Directionality principles in thermodynamics and evolution. Proc. Natl. Acad. Sci. USA, 94: 3491 – 3498 .

  • Publication

    Evolutionary formalism for products of positive random matrices

    Arnold, L., Demetrius, L. and Gundlach, V.M. (1994): Evolutionary formalism for products of positive random matrices. The Annals of Applied Probability, Vol. 4, No. 3: 859 – 901

  • Publication

    Statistical Mechanics and Population Biology

    Demetrius, L. (1983): Statistical Mechanics and Population Biology. Journal of Statistical Physics, Vol. 30, No. 3: 709 – 753 .

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