Extended Horava gravity and Einstein-aether theory

Abstract

Einstein-aether theory is general relativity coupled to a dynamical, unit timelike vector. If this vector is restricted in the action to be hypersurface orthogonal, the theory is identical to the IR limit of the extension of Horava gravity proposed by Blas, Pujolàs and Sibiryakov. Hypersurface orthogonal solutions of Einstein-aether theory are solutions to the IR limit of this theory, hence numerous results already obtained for Einstein-aether theory carry over.

4 pages; v.2: references updated, minor editing, matches version in PRD; v.3: typo fixed in Eq. (10)

References in corpus (14)

• Quantum Gravity at a Lifshitz Point
• A healthy extension of Horava gravity
• Strong coupling in Horava gravity
• On the Extra Mode and Inconsistency of Horava Gravity
• Comment on `Strong coupling in extended Horava-Lifshitz gravity'
• A Trouble with Hořava-Lifshitz Gravity
• A dynamical inconsistency of Horava gravity
• Strong coupling in extended Horava-Lifshitz gravity
• Dynamical Scalar Degree of Freedom in Horava-Lifshitz Gravity
• Cuscuton and low energy limit of Horava-Lifshitz gravity
• Pathological behaviour of the scalar graviton in Hořava-Lifshitz gravity
• Numerical simulations of gravitational collapse in Einstein-aether theory
• Spherically symmetric solutions in modified Horava-Lifshitz gravity
• Is nonrelativistic gravity possible?

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