Date:
11. April 2014 - 11:30
Speaker:
Luigi Pilo (University of l'Aquila)
The Cosmological side of Massive Gravity
I review the status massive gravity with the focus on the cosmological side. Besides purely theoretical consideration, the study of massive versions of general relativity is motivated as a model of dark energy. The navigation through the various models will be guided by two basic principles : reproducing small scale tests of gravity (solar system and bellow) and the existence of sensible cosmological solutions. Form the general construction massive gravity theories with five degrees of freedom or less, based on Hamiltonian analysis, it turns out that the favored models are not nonlinear generalizations of the Fierz-Pauli theory (PF).