A Physical Application of Kerr-Schild Groups

The present work deals with the search of useful physical applications of some generalized groups of metric transformations. We put forward different proposals and focus our attention on the implementation of one of them. Particularly, the results show how one can control very efficiently the kind of spacetimes related by a Generalized Kerr-Schild (GKS) Ansatz through Kerr-Schild groups. Finally a preliminary study regarding other generalized groups of metric transformations is undertaken which is aimed at giving some hints in new Ansätz to finding useful solutions to Einstein's equations.