Hamiltonian analysis of Linearized Extension of Hořava-Lifshitz gravity
arXiv:1008.3435 · doi:10.1016/j.physletb.2010.12.066
Abstract
We investigate the Hamiltonian structure of linearized extended Hořava- Lifshitz gravity in a flat cosmological background following the Faddeev-Jackiw's Hamiltonian reduction formalism. The Hamiltonian structure of extended Hořava-Lifshitz gravity is similar to that of the projectable version of original Hořava-Lifshitz gravity, in which there is one primary constraint and so there are two physical degrees of freedom. We also find that extra scalar graviton mode in an inflationary background can be decoupled from the matter field in the infrared (IR) limit, but it is coupled to the matter field in a general cosmological background. But it is necessary to go beyond linear order in order to draw any conclusion of the strong coupling problem.
arXiv comment11pages
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Cited by in corpus (4)
- Consistency of the Hamiltonian formulation of the lowest-order effective action of the complete Horava theory
- Scalar graviton in the healthy extension of Hořava-Lifshitz theory
- On Gauge Invariant Cosmological Perturbations in UV-modified Horava Gravity
- On the Faddeev-Jackiw Symplectic Framework for Topologically Massive Gravity