Accelerating universe as a result of an adjustment mechanism
General Relativity and Quantum Cosmology
2015-12-02 v1 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Abstract
In this essay we propose that the theory of gravity's vacuum is described by a de Sitter geometry. Under this assumption we consider an adjustment mechanism able to screen any value of the vacuum energy of the matter fields. We discuss the most general scalar-tensor cosmological models with second order equations of motion that have a fixed de Sitter critical point for any kind of material content. These models give rise to interesting cosmological evolutions that we shall discuss.
Keywords
Cite
@article{arxiv.1505.06585,
title = {Accelerating universe as a result of an adjustment mechanism},
author = {Prado Martin-Moruno and Nelson J. Nunes},
journal= {arXiv preprint arXiv:1505.06585},
year = {2015}
}
Comments
7 pages, 2 figures. Essay awarded honorable mention in the Gravity Research Foundation essay competition 2015