We present a Static Universe in a generalized Brans-Dicke gravity theory, where the coupling “constant ” varies with time, as well as the scalar field. There is amplificatiom of gravitational waves in such Universe, at least when it is “young”. PACS 98.80-Hw
We investigate the limit of Brans-Dicke spacetimes as ω → ∞ applying a coordinate-free technique. We obtain the limits of some known exact solutions. It is shown that these limits may not correspond to similar solutions in the general relativity theory. pacs numbers: 04.20.Jb, 04.20.Cv, 04.50.+h