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Cutoff for Extensions of Massive Gravity and Bi-Gravity
Andrew Matas
Recently there has been interest in extending ghost-free massive gravity, bi-gravity, and multi-gravity by including non-standard kinetic terms and matter couplings. We first revie…
Point particle motion in topologically nontrivial space-times
Andrew Matas, Daniel Müller, Glenn Starkman
It is well known that compactifying a space can break symmetries that are present in the covering space. In this paper we study the effects of such topological symmetry breaking on…
New Kinetic Terms for Massive Gravity and Multi-gravity: A No-Go in Vielbein Form
Claudia de Rham, Andrew Matas, Andrew J. Tolley
We reconsider the possibility of a class of new kinetic terms in the first order (vielbein) formulation of massive gravity and multi-gravity. We find that new degrees of freedom em…
Testing General Relativity with Present and Future Astrophysical Observations
Emanuele Berti, Enrico Barausse, Vitor Cardoso +50
One century after its formulation, Einstein's general relativity has made remarkable predictions and turned out to be compatible with all experimental tests. Most of these tests pr…