Classification of cosmological milestones

Details Classification of cosmological milestones Classification of cosmological milestones

2006-07-19

arxiv.org/abs/gr-qc/0607073v1

Phys.Rev. D74 (2006) 064030

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

RevTeX 4, 12 pages

Scientific paper

10.1103/PhysRevD.74.064030

In this paper causal geodesic completeness of FLRW cosmological models is analysed in terms of generalised power expansions of the scale factor in coordinate time. The strength of the found singularities is discussed following the usual definitions due to Tipler and Krolak. It is shown that while classical cosmological models are both timelike and lightlike geodesically incomplete, certain observationally alllowed models which have been proposed recently are lightlike geodesically complete.

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