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Stefano Fantoni
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.
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 the seventies he has been the author, together with Sergio Rosati, of the Power Series cluster theory for strongly interacting fermions, known as FR cluster expansion, and later, of the Fermion Hyper Netted Chain (FHNC) integral equations to compute the FR expansion terms at all orders. Such theories have opened up the modern many-body studies on strongly interacting Fermi systems, such as nuclear matter and Quantum fluids. It is due to him and to V. R. Pandharipande and O. Benhar, the extension at all perturbative orders of the so-called Correlated Basis Function (CBF) theory, originally developed by E. Feenberg, and the proof of its renormalizability, as well as the first realistic calculation of the one-body Green's Function and the Response functions of Nuclear matter, largely used to explain the experimental results of electron and neutrino scattering on heavy nuclei. Also of great importance are his studies done together 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.
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.
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. Stefano Fantoni married in 1969 and has two children and two grandchildren.
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.
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.
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Stefano Fantoni
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.
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 the seventies he has been the author, together with Sergio Rosati, of the Power Series cluster theory for strongly interacting fermions, known as FR cluster expansion, and later, of the Fermion Hyper Netted Chain (FHNC) integral equations to compute the FR expansion terms at all orders. Such theories have opened up the modern many-body studies on strongly interacting Fermi systems, such as nuclear matter and Quantum fluids. It is due to him and to V. R. Pandharipande and O. Benhar, the extension at all perturbative orders of the so-called Correlated Basis Function (CBF) theory, originally developed by E. Feenberg, and the proof of its renormalizability, as well as the first realistic calculation of the one-body Green's Function and the Response functions of Nuclear matter, largely used to explain the experimental results of electron and neutrino scattering on heavy nuclei. Also of great importance are his studies done together 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.
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.
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. Stefano Fantoni married in 1969 and has two children and two grandchildren.
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.
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.