Born-Infeld inspired extensions of gravity and dust inflation

M111 in Maths Building, UCT
Tue, 21/04/2015 - 13:00 - 14:00
Jose Beltrán Jiménez (Université d'Aix-Marseille)

In order to regularize the energy of point-like charged particles, Born and Infeld introduced a modification of the
Maxwell lagrangian that naturally imposes an upper bound on electromagnetic fields. This approach was later taken by
Deser and Gibbons to propose an analogous modification for gravity. I will review some of these ideas as well as some
extensions for the gravitational sector. Finally, a scenario where inflation could be supported by a set of massive
particles within the context of these theories will be discussed.