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Non-singular G2 stiff fluid cosmologies

L. Fernandez-Jambrina·L. M. Gonzalez-Romero
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Abstract

In this paper we analyse Abelian diagonal orthogonally transitive spacetimes with spacelike orbits for which the matter content is a stiff perfect fluid. The Einstein equations are cast in a suitable form for determining their geodesic completeness. A sufficient condition on the metric of these spacetimes is obtained, that is fairly easy to check and to implement in exact solutions. These results confirm that non-singular spacetimes are abundant among stiff fluid cosmologies.

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L. Fernandez-Jambrina, L. M. Gonzalez-Romero. 2004-05-03. Non-singular G2 stiff fluid cosmologies. https://doi.org/10.1063/1.1705715

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