Non-singular cosmology in a model of non-relativistic gravity

Jun, 2009
8 pages
Published in:
  • JCAP 10 (2009) 020
e-Print:

Citations per year

20092013201720212025010203040
Abstract: (arXiv)
We present a model of non-relativistic gravitational theory which is power-counting renormalizable in 3+1 dimensional spacetime. When applied to cosmology, the relativity-violation terms lead to a dark radiation component, which can give rise to a bounce if dark radiation possesses negative energy density. Additionally, we investigate a cyclic extension of the non-singular cosmology in which the universe undergoes contractions and expansions periodically. In both scenarios the background theory is well defined at the quantum level.
  • 04.60.-m
  • 04.60.Bc
  • 98.80.-k
  • gravitation: nonrelativistic
  • energy: density
  • dimension: 3
  • gravitation: renormalizable
  • singularity
  • cosmological model
  • field equations: bounce