Constraints on the DGP Universe Using Observational Hubble parameter

Details Constraints on the DGP Universe Using Observational Hubble parameter Constraints on the DGP Universe Using Observational Hubble parameter

2007-06-19

arxiv.org/abs/0706.2737v1

Phys.Lett.B651:352-356,2007

Astronomy and Astrophysics

Astrophysics

7 pages with 2 figures and 3 tables. Accepted for publication in Physics Letters B

Scientific paper

10.1016/j.physletb.2007.06.053

In this work, we use observations of the Hubble parameter from the differential ages of passively evolving galaxies and the recent detection of the Baryon Acoustic Oscillations (BAO) at $z_1=0.35$ to constrain the Dvali-Gabadadze-Porrati (DGP) universe. For the case with a curvature term, we set a prior $h=0.73\pm0.03$ and the best-fit values suggest a spatially closed Universe. For a flat Universe, we set $h$ free and we get consistent results with other recent analyses.

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