On Infrared Modification of Gravity and Roads to its Ultraviolet Completion

by Dr Mahdi Torabian (Sharif University of Technology and IPM)

Wednesday 1 Feb 2017, 15:00 → 16:00 Asia/Tehran

Particles and Accelerators School Seminar Room (Larak)

In this talk, we look at modification of gravity at low energy or large distance, a change which is phenomenologically motivated by the accelerating cosmic expansion. It basically means devising a consistent field theory of interacting massive spin-2 particles. Such a refinement immediately seeks for a steady theory as its completion at higher energies which is not too far from its mass scale. We will finally discuss some possible approaches to its UV completion from gauge theory and string theory.