John Iliopoulos

Iliopoulos graduated from National Technical University of Athens (NTUA) in 1962 as a Mechanical-Electrical Engineer. He continued his studies in the field of Theoretical Physics in University of Paris, and in 1963 he obtained the D.E.A, in 1965 the Doctorat 3e Cycle, and in 1968 the Doctorat d' Etat titles. Between the years 1966 and 1968 he was a scholar at CERN, Geneva. From 1969 till 1971 he was a Research Associate in Harvard University. In 1971 he returned in Paris and began working at CNRS. He also held the director position of the Laboratory of Theoretical Physics of Ecole Normale Superieure between the years 1991-1995 and 1998-2002. In 2002, Iliopoulos was the first recipient of the Aristeio prize, which has been instituted to recognize Greeks who have made significant contributions towards furthering their chosen fields of science. Iliopoulos and Maiani were jointly awarded the 1987 Sakurai Prize for theoretical particle physics. In 2007 Iliopoulos and Maiani received the Dirac Medal of the ICTP "(f)or their work on the physics of the charm quark, a major contribution to the birth of the Standard Model, the modern theory of Elementary Particles."

Iliopoulos is a specialist in high energy theoretical physics and elementary particle physics. In 1970, in collaboration with Sheldon L. Glashow and Luciano Maïani, he introduced the so-called "GIM mechanism" (named after the three authors) which is an essential element of the theory of fundamental interactions known as the "Standard Model ".[3] This mechanism postulates the existence of a new elementary particle, the "charmed" quark, a prediction that was confirmed by experience. In 1972, in collaboration with Claude Bouchiat and Philippe Meyer,[4] he demonstrated that the mathematical coherence of the Standard Model requires symmetry between the elementary constituents of matter, namely quarks (which form hadrons such as proton and neutron) and leptons (such as electron, muon and neutrinos). This symmetry is also verified experimentally.

Iliopoulos was one of the pioneers of supersymetry, the hypothetical symmetry that links fermions and bosons. He showed that it has remarkable convergence properties and, in collaboration with P. Fayet,[5] he proposed a mechanism that leads to its spontaneous breakage. He also studied some aspects of the quantum theory of gravitation as well as the mathematical properties of invariant gauge theories formulated in a non-commutative geometric space.

• 1978 Langevin Prize of the French Physical Society
• 1984 Jean Ricard Prize of the French Physical Society
• 1987 Sakurai Prize of the American Physical Society
• 1990 / 2002 Corresponding / Full Member of the French Academy of Sciences
• 1996 Doctor honoris causa, Université de la Méditerranée, Aix-Marseille, France
• 1999 Doctor honoris causa, University of Crete, Greece
• 2002 Doctor honoris causa, University of Ioannina, Greece
• 2002 Doctor honoris causa, University of Athens, Greece
• 2002 Bodossaki Prize
• 2005 Matteucci Medal, Accademia Nazionale delle Scienze, detta dei XL
• 2007 Dirac Medal, Abdus Salam International Centre for Theoretical Physics, Trieste, Italy
• 2011 High Energy Physics Prize, European Physical Society
• 2013 Three Physicists Prize, Ecole Normale Supérieure, France

• GIM mechanism