PIRSA:24110052

The dynamics of dRGT massive gravity

Kożuszek, J. (2024). The dynamics of dRGT massive gravity. Perimeter Institute. https://pirsa.org/24110052

Kożuszek, Jan. The dynamics of dRGT massive gravity. Perimeter Institute, Nov. 07, 2024, https://pirsa.org/24110052 

          @misc{ pirsa_PIRSA:24110052,
            doi = {10.48660/24110052},
            url = {https://pirsa.org/24110052},
            author = {Ko{\.z}uszek, Jan},
            keywords = {Strong Gravity},
            language = {en},
            title = {The dynamics of dRGT massive gravity},
            publisher = {Perimeter Institute},
            year = {2024},
            month = {nov},
            note = {PIRSA:24110052 see, \url{https://pirsa.org}}
          }

Jan Kożuszek

Imperial College London

Talk number
PIRSA:24110052
Collection
Talk Type
Subject
Abstract

After reviewing the motivation and challenges connected with the dRGT theory of ghost-free massive gravity, we discuss our recent progress in understanding non-linear dynamics of this model. In spherical symmetry, numerical studies suggest the formation of naked singularities during gravitational collapse of matter. Analytically, the same can be seen in the limit where the graviton mass is much smaller than the scales of the matter present. Both of these results underline the need to move beyond spherical symmetry to try and obtain realistic predictions. To that end, we present a new ‘harmonic-inspired’ formulation of the minimal model and argue that it is well-posed, opening the door to full 3+1 numerical simulations.