A healthy extension of Horava gravity

Details A healthy extension of Horava gravity A healthy extension of Horava gravity

2009-09-21

arxiv.org/abs/0909.3525v1

Phys.Rev.Lett.104:181302,2010

Physics

High Energy Physics

High Energy Physics - Theory

4 pages, no figures

Scientific paper

10.1103/PhysRevLett.104.181302

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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