Symmetries of Trautman retarded radial coordinates
Symmetries of Trautman retarded radial coordinates
We consider spacetime described by observer that uses Trautman's retarded radial coordinates system. Given a metric tensor, we find all the symmetry maps. They set a 10 dimensional family of local diffeomorphisms of spacetime and can be parametrized by the Poincaré algebra. This result is similar to the symmetries of …