Consistent extension of Horava gravity.
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.
Blas
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FSB/ITP/LPPC, Ecole Polytechnique Fédérale de Lausanne, CH-1015, Lausanne, Switzerland.
Pujolàs
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Sibiryakov
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