Past singularities in phantom theories

Details Past singularities in phantom theories Past singularities in phantom theories

2009-03-27

arxiv.org/abs/0903.4776v1

Spanish Relativity Meeting ERE 2007: Relativistic Astrophysics and Cosmology. Eds: A. Oscoz, E. Mediavilla, M. Serra-Ricart. E

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 pp. Uses eas.cls. Spanish Relativity Meeting ERE 2007: Relativistic Astrophysics and Cosmology. Eds: A. Oscoz, E. Mediavilla

Scientific paper

FLRW models filled with just dark energy are shown to have a finite past, since causal geodesics cannot be extended beyond a certain proper time. It is shown that curvature measured along causal geodesics becomes infinity on travelling to the past, though curvature scalars tend to zero. Furthermore the time measured by free-falling observers from coincidence time to Big Rip is shown to be as short as wished by increasing their linear momentum.

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