Extended Horava gravity and Einstein-aether theory
High Energy Physics - Theory
2010-12-24 v3 High Energy Astrophysical Phenomena
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
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, Pujol\`{a}s 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.
Cite
@article{arxiv.1001.4823,
title = {Extended Horava gravity and Einstein-aether theory},
author = {Ted Jacobson},
journal= {arXiv preprint arXiv:1001.4823},
year = {2010}
}
Comments
4 pages; v.2: references updated, minor editing, matches version in PRD; v.3: typo fixed in Eq. (10)