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arXiv · 0909.3525

A healthy extension of Horava gravity

D. Blas·O. Pujolas·S. Sibiryakov
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Abstract

We propose a natural extension of Horava's model for quantum gravity, which is free from the notorious pathologies of the original proposal. The new model endows the scalar graviton mode with a regular quadratic action and remains power-counting renormalizable. At low energies, it reduces to a Lorentz-violating scalar-tensor gravity theory. The deviations with respect to general relativity can be made weak by an appropriate choice of parameters.

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D. Blas, O. Pujolas, S. Sibiryakov. 2009-09-21. A healthy extension of Horava gravity. https://doi.org/10.1103/physrevlett.104.181302

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