Non-singular G2 stiff fluid cosmologies

Details Non-singular G2 stiff fluid cosmologies Non-singular G2 stiff fluid cosmologies

2004-05-03

arxiv.org/abs/gr-qc/0405013v1

J.Math.Phys. 45 (2004) 2113-2123

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

17 pages, LaTeX2e

Scientific paper

10.1063/1.1705715

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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