Constraints on alternative models to dark energy
General Relativity and Quantum Cosmology
2007-05-23 v2 Astrophysics
Abstract
The recent observations of type Ia supernovae strongly support that the universe is accelerating now and decelerated in the recent past. This may be the evidence of the breakdown of the standard Friemann equation. We consider a general modified Friedmann equation. Three different models are analyzed in detail. The current supernovae data and the Wilkinson microwave anisotropy probe data are used to constrain these models. A detailed analysis of the transition from the deceleration phase to the acceleration phase is also performed.
Keywords
Cite
@article{arxiv.gr-qc/0311060,
title = {Constraints on alternative models to dark energy},
author = {Yungui Gong and Chang-Kui Duan},
journal= {arXiv preprint arXiv:gr-qc/0311060},
year = {2007}
}
Comments
10 pages, 1 figure, revtex4