216 citations · 1.8k across the 27 of their papers we have counts for
27 papers
Dark Energy, scalar-curvature couplings and a critical acceleration scale
Ignacio Navarro
We study the effects of coupling a cosmologically rolling scalar field to higher order curvature terms. We show that when the strong coupling scale of the theory is on the 10^{-3}-…
f(R) actions, cosmic acceleration and local tests of gravity
I. Navarro, K. Van Acoleyen
We study spherically symmetric solutions in f(R) theories and its compatibility with local tests of gravity. We start by clarifying the range of validity of the weak field expansio…
Long distance modifications of gravity in four dimensions
I. Navarro, K. Van Acoleyen
We discuss some general characteristics of modifications of the 4D Einstein-Hilbert action that become important for low space-time curvatures. In particular we focus on the chamel…
Dark energy, MOND and sub-millimeter tests of gravity
I. Navarro, K. Van Acoleyen
We consider modifications of General Relativity obtained by adding the logarithm of some curvature invariants to the Einstein-Hilbert action. These non-linear actions can explain t…
Modified gravity, Dark Energy and MOND
Ignacio Navarro, Karel Van Acoleyen
We propose a class of actions for the spacetime metric that introduce corrections to the Einstein-Hilbert Lagrangian depending on the logarithm of some curvature scalars. We show t…
Consistent long distance modification of gravity from inverse powers of the curvature
Ignacio Navarro, Karel Van Acoleyen
In this paper we study long distance modifications of gravity obtained by considering actions that are singular in the limit of vanishing curvature. In particular, we showed in a p…