Monday 23 July 2012
to 14:30 at
Gianmassimo Tasinato (ICG, University of Portsmouth)
I will discuss cosmological solutions in massive gravity, that are potentially able to describe present day acceleration of the universe. After a review of non-linear massive gravity, I will discuss the techniques that allow to analyze the intriguing behavior of cosmological perturbations around the simplest of such cosmological solutions, presenting new and unexpected results arising at third order in a perturbative expansion.