Hamiltonian Analysis of Non-Relativistic Covariant RFDiff Horava-Lifshitz Gravity

TL;DR

This paper conducts a Hamiltonian analysis of non-relativistic covariant Horava-Lifshitz gravity, confirming its consistency and extending it to RFDiff invariant models, ensuring correct degrees of freedom.

Contribution

It provides a detailed Hamiltonian formulation of non-relativistic covariant Horava-Lifshitz gravity and extends the analysis to RFDiff invariant theories, confirming their well-posedness.

Findings

Hamiltonian structure aligns with previous formulations.

The extended RFDiff invariant theory has a consistent constraint system.

The model maintains the correct physical degrees of freedom.

Abstract

We perform the Hamiltonian analysis of non-relativistic covariant Horava-Lifshitz gravity in the formulation presented recently in arXiv:1009.4885. We argue that the resulting Hamiltonian structure is in agreement with the original construction of non-relativistic covariant Ho\v{r}ava-Lifshitz gravity presented in arXiv:1007.2410. Then we extend this construction to the case of RFDiff invariant Ho\v{r}ava-Lifshitz theory. We find well behaved Hamiltonian system with the number of the first and the second class constraints that ensure the correct number of physical degrees of freedom of gravity.