article Open AccessTop 10% cited
Bouncing universes in string-inspired gravity
Journal of Cosmology and Astroparticle Physics · 2006 · Vol. 2006(03) · pp. 009–009
Tirthabir Biswas✉(McGill University)Anupam Mazumdar(Novo Nordisk (Denmark))Warren Siegel(Stony Brook University)
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.
Cosmology and Gravitation TheoriesBlack Holes and Theoretical PhysicsQuantum Electrodynamics and Casimir EffectCosmologyContraction (grammar)f(R) gravityGravitationDark energyCosmological model
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