Lagrange Multiplier Modified Horava-Lifshitz Gravity
  We consider RFDiff invariant Horava-Lifshitz gravity action with additional Lagrange multiplier term that is a function of scalar curvature. We find its Hamiltonian formulation and we show that the constraint structure implies the same number of physical degrees of freedom as in General Relativity. 
J. Kluson
hep-th gr-qc