After ten years of research in particle physics, where I was interested in the search for signals of new physics with colliders, in 2002-2003 I made a thematic conversion to cosmology. The discovery in 1998 of the acceleration of the expansion of the Universe and the multitude of observational projects led me to work on the properties of dark energy.

Since 2013, I have put in place, in the first year of the university, an active pedagogy of the "reverse class" type based on peer instruction and problem based learning. To promote the autonomy of the students I develop numerous numerical activities of "remediation" possessing a tree that adapts to the level of each student.