Lloyd Demetrius is a mathematician and theoretical biologist at the Max Planck Institute for Molecular Genetics at Berlin, Germany, and in the Department of Organismic and Evolutionary biology at Harvard University. Main research interests: 1) ergodic theory of dynamical systems and its applications to the analysis of biological processes at molecular, cellular and population levels; 2) quantum statistics as a formalism to investigate the dynamics of electron transport and proton transduction in cellular metabolism.

Dr. Demetrius earned the BA (1961) and MA (1964) in Mathematics from Cambridge University in England, the PhD (1967) from the University of Chicago, and a postdoc at the University of California, Berkeley.

He is best known for the discovery of the concept, evolutionary entropy, a statistical parameter that characterizes Darwinian fitness in models of evolutionary processes at various levels of biological organization - molecular, organismic and cultural. Dr. 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.

He has been a faculty member in mathematics departments across the United States: University of California, Berkeley; Brown University, and Rutgers University. From 1980 to 1989, Dr. Demetrius was a research scientist at the Max Planck Institute for Biophysical Chemistry in Goettingen, Germany. Since 1990, he has been with the Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, first as a visiting professor, and then as research scholar in population genetics.

Dr. Demetrius has held a visiting professorship at University of Paris and was an occupant of a Chaire Municipale, a distinguished Visiting professorship at the University of Grenoble. During his three years as an MIT MLK Visiting Professor, Dr. Demetrius was hosted by the Division of Bioengineering and Environmental Health and the Department of Brain and Cognitive Sciences.