Scale invariance, unimodular gravity and dark energy
High Energy Physics - Theory
2009-01-16 v2 Astrophysics
High Energy Physics - Phenomenology
Abstract
We demonstrate that the combination of the ideas of unimodular gravity, scale invariance, and the existence of an exactly massless dilaton leads to the evolution of the universe supported by present observations: inflation in the past, followed by the radiation and matter dominated stages and accelerated expansion at present. All mass scales in this type of theories come from one and the same source.
Cite
@article{arxiv.0809.3395,
title = {Scale invariance, unimodular gravity and dark energy},
author = {Mikhail Shaposhnikov and Daniel Zenhausern},
journal= {arXiv preprint arXiv:0809.3395},
year = {2009}
}
Comments
9 pages, 1 figure, replaced with journal version