78 citations · 127 across the 3 of their papers we have counts for
4 papers
A general mass term for bigravity
Giulia Cusin, Ruth Durrer, Pietro Guarato +1
We introduce a new formalism to study perturbations of Hassan-Rosen bigravity theory, around general backgrounds for the two dynamical metrics. In particular, we derive the general…
Inflationary perturbations in bimetric gravity
Giulia Cusin, Ruth Durrer, Pietro Guarato +1
In this paper we study the generation of primordial perturbations in a cosmological setting of bigravity during inflation. We consider a model of bigravity which can reproduce the…
Gravitational waves in bigravity cosmology
Giulia Cusin, Ruth Durrer, Pietro Guarato +1
In this paper we study gravitational wave perturbations in a cosmological setting of bigravity which can reproduce the ΛCDM background and large scale structure. We show that in ge…
Perturbations for massive gravity theories
Pietro Guarato, Ruth Durrer
A theory of massive gravity depends on a non-dynamical 'reference metric' f_{μν} which is often taken to be the flat Minkowski metric. In this paper we examine the theory of pertur…