Journal
PHYSICS LETTERS B
Volume 699, Issue 5, Pages 320-324Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2011.04.032
Keywords
Cosmology; Modified gravity; Cosmological parameters
Funding
- CNPq
- CAPES
Ask authors/readers for more resources
We investigate cosmological consequences of a class of exponential f (R) gravity in the Palatini formalism. By using the current largest type la Supernova sample along with determinations of the cosmic expansion at intermediary and high-z we impose tight constraints on the model parameters. Differently from other f (R) models, we find solutions of transient acceleration, in which the large-scale modification of gravity will drive the Universe to a new decelerated era in the future. We also show that a viable cosmological history with the usual matter-dominated era followed by an accelerating phase is predicted for some intervals of model parameters. (C) 2011 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available