R^2 Dark Matter
General Relativity and Quantum Cosmology
2011-08-25 v1
Abstract
There is a non-trivial four-derivative extension of the gravitational spectrum that is free of ghosts and phenomenologically viable. It is the so called -gravity since it is defined by the only addition of a term proportional to the square of the scalar curvature. Just the presence of this term does not improve the ultraviolet behaviour of Einstein gravity but introduces one additional scalar degree of freedom that can account for the dark matter of our Universe.
Cite
@article{arxiv.1011.0185,
title = {R^2 Dark Matter},
author = {Jose A. R. Cembranos},
journal= {arXiv preprint arXiv:1011.0185},
year = {2011}
}
Comments
6 pages, 1 figure, to appear in the Proceedings of the sixth International Workshop on the Dark Side of the Universe (DSU2010) Leon, Guanajuato, Mexico 1-6 June 2010