Constraints on the DGP Universe Using Observational Hubble parameter
Hao-Yi Wan, Ze-Long Yi, Tong-Jie Zhang (Department of Astronomy,, Beijing Normal University), Jie Zhou (School of Mathematics, Beijing Normal, University)
TL;DR
This study uses observational Hubble data and BAO measurements to constrain the DGP cosmological model, finding evidence for a closed universe when curvature is included and consistency with flat universe models.
Contribution
It provides new observational constraints on the DGP universe, incorporating recent BAO data and Hubble parameter measurements to refine cosmological parameters.
Findings
Best-fit results suggest a closed universe with curvature included.
Constraints are consistent with other recent cosmological analyses.
The study demonstrates the utility of combining Hubble data and BAO in testing modified gravity models.
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 to constrain the Dvali-Gabadadze-Porrati (DGP) universe. For the case with a curvature term, we set a prior and the best-fit values suggest a spatially closed Universe. For a flat Universe, we set free and we get consistent results with other recent analyses.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.