In the course of my scientific activity I developed competence in Field Theory (in particular, but non only, the Constructive and C* Algebraic aspects), in Variational Calculus (in particular applied to Gauge Theories, Celestial Mechanics and Composite Media) and in Stochastic Processes. A field in which I have worked throughout the years is methods of Functional Analysis and C* algebras in Quantum Mechanics (on the subject I have published two books) and Foundations of Quantum Mechanics. At present, I'm studying "very short range" interactions ("contact interaction") in Q.M. and their role in the description of Bose-Einstein Condensation (both in the low density and high density regime) and of several other phenomena (e.g. the presence of Efimov states in low energy physics).