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arXiv · 1009.4074

The good, the bad and the ugly .... of Horava gravity

Antonio Padilla
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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.

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Antonio Padilla. 2010-09-21. The good, the bad and the ugly .... of Horava gravity. https://doi.org/10.1088/1742-6596%2F259%2F1%2F012033

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