Propagations of massive graviton in the deformed Hořava-Lifshitz gravity

Details Propagations of massive graviton in the deformed Hořava-Lifshitz gravity Propagations of massive graviton in the deformed Hořava-Lifshitz gravity

2009-06-04

arxiv.org/abs/0906.0848v3

Phys.Rev.D81:064006,2010

Physics

High Energy Physics

High Energy Physics - Theory

17 pages, version with projectability requirement, to appear in PRD

Scientific paper

10.1103/PhysRevD.81.064006

We study massive graviton propagations of scalar, vector, and tensor modes in
the deformed Ho\v{r}ava-Lifshitz gravity by introducing Lorentz-violating mass
term. It turns out that vector and tensor modes are massively propagating on
the Minkowski spacetime background. However, adding the mass term does not cure
a ghost instability in the Ho\v{r}ava scalar.

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