Galileons in the Sky
Cosmology and Nongalactic Astrophysics
2013-08-20 v2 General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
We review the different frameworks in which Galileon scalar fields have been seen to emerge such an in DGP, New Massive Gravity and Ghost-free massive Gravity and emphasize their relation with the Lovelock invariant in braneworld models. The existence of a non-renormalization theorem for Galileon scalar fields makes them especially attractive candidates for inflation as well as for late-time acceleration. In particular we review the self-accelerating and degravitating branches of solutions present in Galileon models when arising from Massive Gravity and discuss their phenomenology.
Keywords
Cite
@article{arxiv.1204.5492,
title = {Galileons in the Sky},
author = {Claudia de Rham},
journal= {arXiv preprint arXiv:1204.5492},
year = {2013}
}
Comments
References added, Typos corrected