Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2008-11-17
Phys.Lett.B687:103-109,2010
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
8pages, 5figures. Final version published in PLB.
Scientific paper
10.1016/j.physletb.2010.03.028
The usual Einstein's equations is modified as a one parameter family of equations in the framework of rainbow gravity. In this paper we derive the modified Friedmann-Robertson-Walker (FRW) equations when the cosmological evolution of radiation particles is taken into account. In particular, given some specific dispersion relations, the big bounce solutions to the modified FRW equations can be derived. Notably, to obtain a well defined rainbow metric at the moment of the big bounce, we find it seems necessary to introduce a cosmological constant which depends on the energy of probes as well, implying that a universe with a positive cosmological constant more likely undergoes a big bounce at least at this phenomenological level.
Ling Yi
Wu Qingzhang
No associations
LandOfFree
The Big Bounce in Rainbow Universe does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Big Bounce in Rainbow Universe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Big Bounce in Rainbow Universe will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-466337