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Interactions of Charged Spin-2 Fields
Claudia de Rham, Andrew Matas, Nicholas Ondo +1
In light of recent progress in ghost-free theories of massive gravity and multi-gravity, we reconsider the problem of constructing a ghost-free theory of an interacting spin-2 fiel…
Stable FLRW solutions in Generalized Massive Gravity
Claudia de Rham, Matteo Fasiello, Andrew J. Tolley
We present exact FLRW solutions in generalized massive gravity where the mass parameters are naturally promoted to Lorentz-invariant functions of the Stuckelberg fields. This new d…
Ghosts & Matter Couplings in Massive (bi-&multi-)Gravity
Claudia de Rham, Lavinia Heisenberg, Raquel H. Ribeiro
Recently, several works have investigated the coupling to matter in ghost-free massive (bi-&multi-)gravity and a new effective coupling to matter has been proposed. In this note we…
On couplings to matter in massive (bi-)gravity
Claudia de Rham, Lavinia Heisenberg, Raquel H. Ribeiro
We investigate the coupling to matter in ghost-free massive (bi-)gravity. When species in the matter sector couple covariantly to only one metric, we show that at one--loop these c…
Riding on irrelevant operators
Claudia de Rham, Raquel H. Ribeiro
We investigate the stability of a class of derivative theories known as and Galileons against corrections generated by quantum effects. We use an exact renormalisation group…
Generalized Galileon Duality
Claudia de Rham, Luke Keltner, Andrew J. Tolley
We generalize the Galileon duality to any single scalar field Lagrangian coupled locally to any matter field. Under the duality, a generalized Galileon maps into another generalize…