The Department of Physics remembers Mario P. Tosi, emeritus professor at Pisa’s Scuola Normale Superiore and formerly (1977 to 1991) professor of Condensed Matter Physics at the University of Trieste. He passed away on Sunday, November the 1st. Internationally established researcher and one of the founding fathers of Condensed Matter Theory in Italy, Mario Tosi graduated from the University of Pavia, was researcher at Argonne National Laboratory in the US, and then professor in the Universities of Messina, Rome  and Trieste. He also directed the Condensed Matter Physics activities of the International Centre for Theoretical Physics from 1978 to 1991. Finally, in 1991 he joined the Scuola Normale Superiore in Pisa.

Mario Tosi  made numerous well-recognized contributions to the Theoretical Physics and the Statistical Mechanics of condensed systems (solids, liquids, gases). He provided seminal contributions to subjects such as correlations in electron fluids, Bose-Einstein condensates, Fermionic and Bosonic degenerate gases, ionic liquids and liquid metals. He has been a great educator for generations of students, many of whom occupy leading research positions worldwide: they will never forget his total dedication and his enthusiasm.