Relativistic Quantum Gravity at a Lifshitz Point

Germani, C, Kehagias, A and Sfetsos, K (2009) Relativistic Quantum Gravity at a Lifshitz Point

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Abstract

We show that the Horava theory for the completion of General Relativity at UV scales can be interpreted as a gauge fixed theory, and it can be extended to an invariant theory under the full group of four-dimensional diffeomorphisms. In this respect, although being fully relativistic, it results to be locally anisotropic in the time-like and space-like directions defined by a family of irrotational observers. We show that this theory propagates generically three degrees of freedom: two of them are related to the four-dimensional diffeomorphism invariant graviton (the metric) and one is related to a propagating scalar mode. Finally, we note that in the present formulation, matter can be consistently coupled to gravity.

Item Type:	Article
Authors :	Name Email ORCID Germani, C Kehagias, A Sfetsos, K k.sfetsos@surrey.ac.uk
Date :	7 June 2009
Identification Number :	10.1088/1126-6708/2009/09/060
Uncontrolled Keywords :	hep-th, hep-th, astro-ph.CO, gr-qc, hep-ph
Related URLs :	Author Publisher
Depositing User :	Symplectic Elements
Date Deposited :	17 May 2017 12:26
Last Modified :	17 May 2017 12:26
URI:	http://epubs.surrey.ac.uk/id/eprint/835325

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