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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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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
Divisions : Surrey research (other units)
Authors :
Germani, C
Kehagias, A
Date : 7 June 2009
DOI : 10.1088/1126-6708/2009/09/060
Uncontrolled Keywords : hep-th, hep-th, astro-ph.CO, gr-qc, hep-ph
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 12:26
Last Modified : 24 Jan 2020 22:14

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