%0 Journal Article
%T Uniqueness of the non-singular family and characterisation of cosmological models
%A Naresh Dadhich
%A L. K. Patel
%J Physics
%D 1994
%I arXiv
%X We prove that for an orthogonal spacetime metric separable in space and time in comoving coordinates, the requirements of perfect fluid and non-singularity single out the unique family of singularity free cosmological models. Further homogeneous models could only be Bianchi I or FLRW while inhomogeneous ones can be with or without a singularity.
%U http://arxiv.org/abs/gr-qc/9406034v2