263 citations · 589 across the 13 of their papers we have counts for
13 papers
Testing Gravity on Cosmic Scales: A Case Study of Jordan-Brans-Dicke Theory
Shahab Joudaki, Pedro G. Ferreira, Nelson A. Lima +1
We provide an end-to-end exploration of a distinct modified gravitational theory in Jordan-Brans-Dicke (JBD) gravity, from an analytical and numerical description of the background…
The road ahead of Horndeski: cosmology of surviving scalar-tensor theories
Noemi Frusciante, Simone Peirone, Santiago Casas +1
In the context of the effective field theory of dark energy (EFT) we perform agnostic explorations of Horndeski gravity. We choose two parametrizations for the free EFT functions,…
Gravitational wave speed: Implications for models without a mass scale
Henrik Nersisyan, Nelson A. Lima, Luca Amendola
The recent report that the gravitational wave speed equals the light speed puts strong constraints on the anisotropic stress parameter of many modified gravity models, a quantity t…
A comparison of Einstein-Boltzmann solvers for testing General Relativity
E. Bellini, A. Barreira, N. Frusciante +24
We compare Einstein-Boltzmann solvers that include modifications to General Relativity and find that, for a wide range of models and parameters, they agree to a high level of preci…
Dynamics of cosmological perturbations in modified Brans-Dicke cosmology with matter-scalar field interaction
Georgios Kofinas, Nelson A. Lima
In this work we focus on a novel completion of the well-known Brans-Dicke theory that introduces an interaction between the dark energy and dark matter sectors, known as complete B…
Constraints on decaying early modified gravity from cosmological observations
Nelson A. Lima, Vanessa Smer-Barreto, Lucas Lombriser
Most of the information on our cosmos stems from either late-time observations or the imprint of early-time inhomogeneities on the cosmic microwave background. We explore to what e…