wednesday 10h30-12h00 Laboratoire Rene-Levesque (Universite de Montreal) room L-104 (ground floor) thursday 10h30-12h00 and 13h30-15h00 Rutherford building (McGill) room 326 (third floor) The talk will be given by Thomas Gregoire (PHD student of N. Arkani-Hamed). Here is the contents: 1. Introduction and motivations: a) Effective field theories b) Hierarchy problem c) Field theories in extra-dimension: Kaluza-Klein decomposition d) Derivation of Newton's constant in theories with extra-dimension 2. ADD model (large extra dimension) a) The model b) A new approach to the hierarchy problem c) Consequences and constraints: -table top gravity experiments -supernovea cooling -cosmology d) Phenomenology at e+e- and hadron colliders 3. Problems of ADD and their solutions: a) Proton stability b) Flavour changing neutral current c) Neutrino masses d) Raduis stabilization 4. Rs Model (Randall-Sundrum) a) RS II: an alternative to compactification b) RS I : solution to the hierarchy problem c) Phenomenology All the talks will be given in english. See you!