Scalar gravitational waves and Einstein frame
arXiv:hep-th/0103180 · doi:10.1016/S0375-9601(01)00216-X
Abstract
The response of a gravitational wave detector to scalar waves is analysed in the framework of the debate on the choice of conformal frames for scalar-tensor theories. A correction to the geodesic equation arising in the Einstein conformal frame modifies the geodesic deviation equation. This modification is due to the non-metricity of the theory in the Einstein frame, yielding a longitudinal mode that is absent in the Jordan conformal frame.
14 pages, LaTeX, PACS: 04.30.-w, 04.30.Nk, 04.50.+h, accepted for publication in Phys. Lett. A