Scalar curvature of spacelike hypersurfaces and certain class of cosmological models for accelerated expanding universes
arXiv:1511.01422 · doi:10.1016/j.geomphys.2016.02.005
Abstract
We study the scalar curvature of spacelike hypersurfaces in the family of cosmological models known as generalized Robertson-Walker spacetimes, and give several rigidity results under appropriate mathematical and physical assumptions. On the other hand, we show that this family of spacetimes provides suitable models obeying the null convergence condition to explain accelerated expanding universes.
arXiv commentarXiv admin note: text overlap with arXiv:1503.00120
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