Nonpropagation of scalar in the deformed Hořava-Lifshitz gravity
arXiv:0905.3423 · doi:10.1016/j.physletb.2009.11.005
Abstract
We study the propagation of a scalar, the trace of in the deformed Hořava-Lifshitz gravity with coupling constant . 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.
17 pages, no figure, some points clarified
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