On the phenomenology of extended Brans-Dicke Gravity
Cosmology and Nongalactic Astrophysics
2016-01-13 v3
Abstract
We introduce a designer approach for extended Brans-Dicke gravity that allows us to obtain the evolution of the scalar field by fixing the Hubble parameter to that of a CDM model. We obtain analytical approximations for as a function of the scale factor and use these to build expressions for the effective Newton's constant at the background and at the linear level and the slip between the perturbed Newtonian potentials. By doing so, we are able to explore their dependence on the fundamental parameters of the theory.
Keywords
Cite
@article{arxiv.1506.07771,
title = {On the phenomenology of extended Brans-Dicke Gravity},
author = {Nelson A. Lima and Pedro G. Ferreira},
journal= {arXiv preprint arXiv:1506.07771},
year = {2016}
}
Comments
19 pages, 8 Figures. Minor revisions to match version accepted by JCAP