Francois Gelis is a researcher at the Institut de Physique Theorique of CEA-Saclay, France. He received his M.S. from Ecole Normale Superieure de Lyon and a Ph.D. from the Universite de Savoie. His research area is the theoretical study of the extreme phases of matter produced in heavy ion collisions. This led him to develop new Quantum Field Theory techniques to handle the strong fields encountered in these situations, for which he was awarded the Paul Langevin prize of the French physical society in 2015. He has taught QFT at Ecole Polytechnique since 2016.