... Assistant Professor, INAF Arcetri Astrophysical Observatory, Florence Italy . ... My research is mainly concentrated on the studies at the boundaries between Particle Physics and Astrophysics. ... IтАЩm involved in the activity of the High Energy Astrophysics Group at the Arcetri Astrophysical Observatory, of the Theory Group at the Gran Sasso National Laboratory and of the Gran Sasso Science Institute an international PhD school on Physics, Mathematics, Computer Science and Social Sciences. ...