A Test of Horava Gravity: The Dark Energy
Jun, 2009Citations per year
Abstract: (arXiv)
Recently Horava proposed a renormalizable gravity theory with higher spatial derivatives in four dimensions which reduces to Einstein gravity with a non-vanishing cosmological constant in IR but with improved UV behaviors. Here, I consider a non-trivial test of the new gravity theory in FRW universe by considering an IR modification which breaks 'softly' the detailed balance condition in the original Horava model. I separate the dark energy parts from the usual Einstein gravity parts in the Friedman equations and obtain the formula of the equations of state parameter. The IR modified Horava gravity seems to be consistent with the latest observational data.Note:
- 10 pages, 3 figures, 1 table
- 04.50.Kd
- 95.36.+x
- 98.80.-k
- dimension: 4
- gravitation: renormalizable
- gravitation: massive
- dark energy
- cosmological constant
- space-time: Robertson-Walker
- gravitation: Horava-Lifshitz
References(0)
Figures(4)
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