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Bouncing Universes in String-inspired Gravity

Authors
  • Biswas, Tirthabir
  • Mazumdar, Anupam
  • Siegel, Warren
Type
Published Article
Publication Date
Sep 13, 2005
Submission Date
Aug 26, 2005
Identifiers
DOI: 10.1088/1475-7516/2006/03/009
Source
arXiv
License
Unknown
External links

Abstract

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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