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arXiv · 1904.12120

On generalized quasi-Einstein GRW space-times

Uday Chand De·Sameh Shenawy
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Abstract

Recently, it is proven that generalized Robertson-Walker space-times in all orthogonal subspaces of Gray's decomposition but one(unrestricted) are perfect fluid space-times. GRW space-times in the unrestricted subspace are identified by having constant scalar curvature. Generalized quasi-Einstein GRW space-times have a constant scalar curvature. It is shown that generalized quasi-Einstein GRW space-times reduce to Einstein space-times or perfect fluid space-times.

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Uday Chand De, Sameh Shenawy. 2019-04-27. On generalized quasi-Einstein GRW space-times. https://doi.org/10.1142/s021988781950124x

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