The Galileon: Where From? Where To?

by Claudia de Rham (Geneva University)

Monday 1 Nov 2010, 13:30 → 14:30 Europe/Stockholm

CoPS group room (A5:1041)

The Galileon model introduced by Nicolis et al. is an extension of the decoupling limit of DGP, involving a relativistic scalar pi with specific derivative self-interactions. I will show how this model naturally arises in some limit of braneworld scenarios as well as in four-dimensional massive gravity, where the scalar pi plays the role of the helicity-0 mode of the graviton. I will then discuss some applications for early cosmology in a model of Galileon Inflation, as well as for late cosmology mentioning the implications for the late-time acceleration of the Universe.