PhD in Physics in 1990 at the University of Catania. Associate Professor in Catania and later at Scuola Normaler Superiore, he was appointed Professor in Condensed Matter theory at International School for Advanced Studies in 2005. He is presently Professor of Condensed Matter Physics at Scuola Normale Superiore. Over the years he has been visiting scientist in a number of Institutions including Univ. J. Fourier (Grenoble), Universitaet Karlsruhe, NTT Basic Research Labs, and National University of Singapore. Presently co-Editor of EPL and Annalen der Physik.