The dynamics of dRGT massive gravity |
Jan Kożuszek, Imperial College |
Event Type: Informal HEP Talk |
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Time: 2:00 PM - 3:15 PM |
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Location: 726 Broadway, 940, CCPP Seminar |
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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. |