Nonpropagation of scalar in the deformed Hořava-Lifshitz gravity

Details Nonpropagation of scalar in the deformed Hořava-Lifshitz gravity Nonpropagation of scalar in the deformed Hořava-Lifshitz gravity

2009-05-21

arxiv.org/abs/0905.3423v2

Phys.Lett.B682:246-252,2009

Physics

High Energy Physics

High Energy Physics - Theory

17 pages, no figure, some points clarified

Scientific paper

10.1016/j.physletb.2009.11.005

We study the propagation of a scalar, the trace of $h_{ij}$ in the deformed Ho\v{r}ava-Lifshitz gravity with coupling constant $\lambda$. It turns out that this scalar is not a propagating mode in the Minkowski spacetime background. In this work, we do not choose a gauge-fixing to identify the physical degrees of freedom and instead, make it possible by substituting the constraints into the quadratic Lagrangian.

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