Essential Constants for Spatially Homogeneous Ricci-flat manifolds of dimension 4 + 1

Abstract

The present work considers (4+1)-dimensional spatially homogeneous vacuum cosmological models. Exact solutions — some already existing in the literature, and others believed to be new — are exhibited. Some of them are the most general for the corresponding Lie group with which each homogeneous slice is endowed, and some others are quite general. The… (More)

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