What if Newton's Gravitational Constant was negative?
General Relativity and Quantum Cosmology
2019-03-19 v1
Abstract
In this work, we seek a cosmological mechanism that may define the sign of the effective gravitational coupling constant, {\em G}. To this end, we consider general scalar-tensor gravity theories as they provide the field theory natural framework for the variation of the gravitational coupling. We find that models with a quadratic potential naturally stabilize the value of {\em G} into the positive branch of the evolution and further, that de Sitter inflation and a relaxation to General Relativity is easily attained.
Keywords
Cite
@article{arxiv.1903.07604,
title = {What if Newton's Gravitational Constant was negative?},
author = {Ismael Ayuso and José P. Mimoso and Nelson J. Nunes},
journal= {arXiv preprint arXiv:1903.07604},
year = {2019}
}
Comments
16 pages, 16 figures