Stefano Fantoni (born 4 June 1945) is an Italian theoretical physicist, now retired from the International School for Advanced Studies in Trieste (SISSA), still working in the fields of nuclear physics and low temperature physics. He may be best known for his work done with Kevin Schmidt on Quantum Monte Carlo methods for nuclear systems, and particularly the development of the Auxiliary Field Diffusion Monte Carlo (AFDMC) method, heavily used in nuclear and neutron matter calculations.
Early life and education Stefano Fantoni was born in Taranto on 4 June 1945. He attended the high school in Livorno, graduated in physics in 1968 from University of Pisa, and received his PhD degree in 1970 from the Scuola Normale Superiore. Stefano Fantoni married in 1969 and has two children and two grandchildren.
Career and research activity He first worked as an assistant lecturer at the University of Pisa from November 1970 and then as associate professor since 1972. In 1986 he became full professor and three-month later he was given the chair of Nuclear Physics at the University of Lecce. From 1991 to 2000 he acted as Director of the Interdisciplinary Laboratory of the International School for Advanced Studies, SISSA in Trieste. In 2004 he was elected and nominated as SISSA Director, duty that he has covered until November 2010.
Research Fantoni's research activity has been mainly devoted to quantum liquids of interest of nuclear and condensed matter phenomena typical of low temperature physics. He started doing research during his graduation thesis in light nuclei with his first article in 1970 on 6Li. He is today among the three topmost scientists of Italian nationality in the field of theoretical Nuclear physics. The common denominator of his research was to go beyond the mean-field models in solving the so-called many-body theory that occurs in quantum Bose or/and Fermi systems, characterized by the presence of strong correlations among their components. In this context he gave four main contributions: (i) the development cluster expansion techniques, known in the literature as the Fantoni-Rosati (FR) cluster expansion, (ii) the derivation of the Fermi Hyper Netted Chain (FHNC) equations, to sum up series of cluster terms (iii) the development of Correlated Basis Function theory (CBF) and, more recently, (iv) the development of a new numerical simulation Monte Carlo method for nuclear systems, known as Auxiliary Field Diffusion Monte Carlo (AFDMC). Fantoni founded four research groups one in Pisa, a second one in Lecce and a third one in Urbana, Illinois, all in the field of nuclear physics and a fourth one in Trieste in Condensed matter physics. He also coordinated a research group made of few Italian and foreign universities and research laboratories in the field of nuclear astrophysics.
Italian representative of nuclear physics He has been the Italian representative of nuclear physics in several international bodies dealing with future perspectives in nuclear physics and electron scattering off nuclei at intermediate energies. His research group at the SISSA Interdisciplinary Laboratory has developed a new communication model based on the existing interconnections and inter-relations among communicating agents,. The SISSA model has been designed to overcome some of the deficiencies of the traditional top-down model in which communication simply flows from those who know to those who do not know. In connections with this kind of research Stefano Fantoni founded in 2005 the first PhD school in Science and Society supported by both SISSA and the University of Milan. Fantoni has been co-editor of the series Tessere (Cuen editing company, Naples) (1994–1998); publisher of the e-journal JCOM from its foundation in 2004 and author of various articles in newspapers and books and of a dozen research articles on science communication.
International experience Stefano Fantoni spent several stays abroad as visiting professor: in 1977 at the Niels Bohr Institute of Copenhagen in 1979 at the Institute fur Physik in Koln; from 1980 to 1982 and in 1984 at the Department of Physics, University of Illinois at Urbana–Champaign in 1990 at the Jefferson Laboratory (CEBAF) in Newport News, Virginia, r; in 2000 at the Theory Center Seattle (Washington). He has also been a consultant of the National Science Foundation and of the European Commission in the framework of INTAS program; Italian delegate to the OECD Committee Megaforum Science in Nuclear Physics in 1997 and 1998; member of the Program Advisory Committee for the Jefferson Laboratory at Newport News in Virginia from 1989 to 1993, when the accelerator was still under construction and the center began to outline its strategic lines of experimental research; member and then chairman of the Program Advisory Committee of INFN laboratories in Legnaro (Padua) in the period 1991–1996; member of the board of directors of the European Center for Theoretical Studies in Nuclear Physics and related areas (ECT*) in 1993, when it was founded in Villazzano (Trento), until 1995; during the period 2003/2009 he was member of the International Advisory Committee of the Institute for Advanced Studies, Collegium Budapest.
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