124 citations · 360 across the 7 of their papers we have counts for
5 papers · 1 filter
Double screening
Pierre Gratia, Wayne Hu, Austin Joyce +1
Attempts to modify gravity in the infrared typically require a screening mechanism to ensure consistency with local tests of gravity. These screening mechanisms fit into three broa…
Self-accelerating Massive Gravity: Bimetric Determinant Singularities
Pierre Gratia, Wayne Hu, Mark Wyman
The existence of two metrics in massive gravity theories in principle allows solutions where there are singularities in new scalar invariants jointly constructed from them. These c…
Self-accelerating Massive Gravity: How Zweibeins Walk through Determinant Singularities
Pierre Gratia, Wayne Hu, Mark Wyman
The theory of massive gravity possesses ambiguities when the spacetime metric evolves far from the non-dynamical fiducial metric used to define it. We explicitly construct a spheri…
Self-accelerating Massive Gravity: Time for Field Fluctuations
Mark Wyman, Wayne Hu, Pierre Gratia
The ghost-free theory of massive gravity has exact solutions where the effective stress energy generated by the graviton mass term is a cosmological constant for any isotropic metr…
Self-accelerating Massive Gravity: Exact solutions for any isotropic matter distribution
Pierre Gratia, Wayne Hu, Mark Wyman
We present an exact solution to the equations of massive gravity that displays cosmological constant-like behavior for any spherically symmetric distribution of matter, including a…