Constraints on the DGP Universe using observational Hubble parameter

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 z1=0.35 to constrain the Dvali–Gabadadze–Porrati (DGP) Universe. For the case with a curvature term, we set a prio...

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Bibliographic Details
Published inPhysics letters. B Vol. 651; no. 5-6; pp. 352 - 356
Main Authors Wan, Hao-Yi, Yi, Ze-Long, Zhang, Tong-Jie, Zhou, Jie
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 09.08.2007
Elsevier Science
Subjects
Exact sciences and technology
Nuclear physics
Physics
The physics of elementary particles and fields
95.36.+x
04.50.+h
98.80.Cq
98.80.Es
Galaxies
Hubble constant
Cosmology
Closed universe
Curvature
Age
Baryons
Flat metric
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Summary: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 z1=0.35 to constrain the Dvali–Gabadadze–Porrati (DGP) Universe. For the case with a curvature term, we set a prior h=0.73±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.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2007.06.053