829 citations · 2.8k across the 42 of their papers we have counts for
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On scale-free extensions of massive (bi-)gravity
Giulia Cusin, Nima Khosravi, Johannes Noller
We discuss a scale-free model of bigravity, in which the mass parameter of the standard bigravity potential is promoted to a dynamical scalar field. This modification retains the g…
Dark Energy and Doubly Coupled Bigravity
Philippe Brax, Anne-Christine Davis, Johannes Noller
We analyse the late time cosmology and the gravitational properties of doubly coupled bigravity in the constrained vielbein formalism (equivalent to the metric formalism) when the…
A general theory of linear cosmological perturbations: scalar-tensor and vector-tensor theories
Macarena Lagos, Tessa Baker, Pedro G. Ferreira +1
We present a method for parametrizing linear cosmological perturbations of theories of gravity, around homogeneous and isotropic backgrounds. The method is sufficiently general and…