Constraints on the DGP Universe Using Observational Hubble parameter

Hao-Yi Wan; Ze-Long Yi; Tong-Jie Zhang; Jie Zhou

doi:10.1016/j.physletb.2007.06.053

paper

Constraints on the DGP Universe Using Observational Hubble parameter

arXiv:0706.2737 · doi:10.1016/j.physletb.2007.06.053

Abstract

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 $h = 0.73 \pm 0.03$ 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.

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