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Uniqueness of the non-singular family and characterisation of cosmological models

Naresh Dadhich·L. K. Patel
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Abstract

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.

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Naresh Dadhich, L. K. Patel. 1994-09-02. Uniqueness of the non-singular family and characterisation of cosmological models. https://arxiv.org/abs/gr-qc/9406034

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