Bouncing Universes in String-inspired Gravity
高能物理 - 理论
2009-11-11 v2 天体物理学
广义相对论与量子宇宙学
摘要
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.
引用
@article{arxiv.hep-th/0508194,
title = {Bouncing Universes in String-inspired Gravity},
author = {Tirthabir Biswas and Anupam Mazumdar and Warren Siegel},
journal= {arXiv preprint arXiv:hep-th/0508194},
year = {2009}
}
备注
28 pages, 2 figures; v2: added references