Bouncing Universes in String-inspired Gravity

Details Bouncing Universes in String-inspired Gravity Bouncing Universes in String-inspired Gravity

2005-08-26

arxiv.org/abs/hep-th/0508194v2

JCAP 0603 (2006) 009

Physics

High Energy Physics

High Energy Physics - Theory

28 pages, 2 figures; v2: added references

Scientific paper

10.1088/1475-7516/2006/03/009

We consider the effects on cosmology of higher-derivative modifications of
(effective) gravity that make it asymptotically free without introducing
ghosts. The weakening of gravity at short distances allows pressure to prevent
the singularity, producing a solution with contraction preceding expansion.

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