The good, the bad and the ugly .... of Horava gravity
High Energy Physics - Theory
2011-01-04 v1
Abstract
I review the good, the bad and the ugly of the non-projectable versions of Horava gravity. I explain how this non-relativistic theory was constructed and why it was touted with such excitement as a quantum theory of gravity. I then review some of the issues facing the theory, explaining how strong coupling occurs and why this is such a problem for both phenomenology and the question of renormalisability. Finally I comment on possible violations of Equivalence Principle, and explain why these could be an issue for Blas et al's "healthy extension". This paper was presented as a talk at PASCOS 2010 in Valencia.
Keywords
Cite
@article{arxiv.1009.4074,
title = {The good, the bad and the ugly .... of Horava gravity},
author = {Antonio Padilla},
journal= {arXiv preprint arXiv:1009.4074},
year = {2011}
}
Comments
7 pages