Bimetric gravity doubly coupled to matter: theory and cosmological implications
High Energy Physics - Theory
2013-10-25 v2 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
Abstract
A ghost-free theory of gravity with two dynamical metrics both coupled to matter is shown to be consistent and viable. Its cosmological implications are studied, and the models, in particular in the context of partially massless gravity, are found to explain the cosmic acceleration without resorting to dark energy.
Keywords
Cite
@article{arxiv.1306.0004,
title = {Bimetric gravity doubly coupled to matter: theory and cosmological implications},
author = {Yashar Akrami and Tomi S. Koivisto and David F. Mota and Marit Sandstad},
journal= {arXiv preprint arXiv:1306.0004},
year = {2013}
}
Comments
25 pages, no figures; typos corrected; references added; some discussions added in response to referee's comments; matches version accepted for publication in JCAP