Bouncing universes in string-inspired gravity

@article{Biswas2005BouncingUI,
  title={Bouncing universes in string-inspired gravity},
  author={Tirthabir Biswas and Anupam Mazumdar and Warren Siegel},
  journal={Journal of Cosmology and Astroparticle Physics},
  year={2005},
  volume={2006},
  pages={009 - 009}
}
We consider the effects on cosmology of higher derivative modifications of gravity that make it asymptotically free without introducing ghosts. The weakening of gravity at short distances allows pressure to prevent a singularity, producing a solution with contraction preceding expansion. 
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491 Citations
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