Non-Projectable Horava-Lifshitz Gravity without Unwanted Scalar Graviton

Understand

We consider a way of eliminating the unwanted scalar graviton from Horava-Lifshitz gravity.

• That is achieved via introduction of certain additional constraints.
• We perform canonical analysis of both projectable and non-projectable versions of the theory.
• We obtain the structure of constraints in each case, and analyze its dependence on the values of the coupling constants involved in the additional constraints.