Dimitri Nanopoulos (born 13 September, 1948 in Athens) is a Greek physicist. He is one of the most regularly cited researchers in the world, cited more than 33,000 times over across a number of separate branches of science.
Nanopoulos studied Physics at the University of Athens and graduated in 1971, continuing his studies at the University of Sussex in England, where he obtained his Ph.D., in 1973, in High Energy Physics. He has been a Research Fellow at the Center of European Nuclear Research (CERN) in Geneva, Switzerland and for many years has been a staff member and Research Fellow at the Ecole Normale Superieure, in Paris, France and at Harvard University, Cambridge, United States. In 1989, he was elected Professor at the Department of Physics, at the NASA-supported Texas A&M University where, since 1992, he has been a Distinguished Professor of Physics, and, since 2002, holder of the Mitchell/Heep Chair in High Energy Physics; he is also a distinguished HARC fellow at the Houston Advanced Research Center in Houston, Texas. In 1997, he was appointed regular member of the Academy of Athens, and, in 2005, President of the Greek National Council for Research and Technology, Greek National Representative to the European Laboratory for Particle Physics, CERN, and to the European Space Agency (ESA).
He has made several contributions to particle physics and cosmology, and works in string unified theories, fundamentals of quantum theory, astroparticle physics and quantum-inspired models of brain function. He has written over 540 original papers, including 13 books. He has over 33,000 citations, placing him as the fourth most cited High Energy Physicist of all time, according to the 2001 and 2004 census. Since 1988, he has been fellow of the American Physical Society, and, since 1992, member of the Italian Physical Society. In 1996, he was made Commander of the Order of Honour of the Greek State.
With his colleagues John Hagelin, a former U.S presidential candidate, and the British physicist John Ellis he derived the flipped SU(5) model of the unification of forces from heterotic string.