Consistent Extension of Hořava Gravity

2009/09/21 by Diego Blas, D. Blas, Oriol Pujolàs +3 · 6 citations
Physics and Astronomy · #Advanced Differential Geometry Research #Black Holes and Theoretical Physics #Noncommutative and Quantum Gravity Theories #astro-ph.CO #gr-qc #hep-th

paper · pdf · doi:10.1103/physrevlett.104.181302

published as Phys.Rev.Lett.104:181302,2010 · 4 pages, no figures

arxiv created 2009/09/21 · openalex publication_date 2010/05/07 · arxiv updated 2010/05/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31

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.

Citations

• Lorentz invariance and quantum gravity: an additional fine-tuning problem?
• Lorentz violation and perpetual motion

Cited by

• Unifying inflation with dark energy in modified F(R) Hořava–Lifshitz gravity
• Cosmology of Hořava–Lifshitz f(R) gravity
• Testing general relativity in cosmology
• Renormalization group flows in a Lifshitz-like four-Fermi model
• Hořava-Lifshitz gravity: a status report
• Interpreting OPERA results on superluminal neutrino