PREFERRED FRAME PARAMETERS IN THE TENSOR-VECTOR-SCALAR THEORY OF GRAVITY

摘要

We present results of our calculation of the preferred frame Parameterized Post Newtonian parameters α1 and α2 for TeVeS, with a nonzero value of the cosmological scalar field taken into account. We find that the cosmological value of the scalar field is tightly linked to the vector field coupling constant K, preventing the former from evolving as predicted by its equation of motion. We show that generalizing TeVeS to have an ?ther type vector action removes the aforesaid link, whereas generalized TeVeS' β, γ and ξ PPN parameters are identical to those in General Relativity. Moreover, the requirement that both alphas be zero can be satisfied for small ranges of generalized TeVeS' coupling parameters, making the theory indiscernible from General Relativity in the Solar System.