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Cosmological constraints on DGP braneworld gravity with brane tension

Lombriser, L; Hu, W; Fang, W; Seljak, U (2009). Cosmological constraints on DGP braneworld gravity with brane tension. Physical Review D, 80(6):063536.

Abstract

We perform a Markov chain Monte Carlo analysis of the self-accelerating and normal branch of Dvali-Gabadadze-Porrati braneworld gravity. By adopting a parametrized post-Friedmann description of gravity, we utilize all of the cosmic microwave background data, including the largest scales, and its correlation with galaxies in addition to the geometrical constraints from supernovae distances and the Hubble constant. We find that on both branches brane tension or a cosmological constant is required at high significance with no evidence for the unique Dvali-Gabadadze-Porrati modifications. The crossover scale must therefore be substantially greater than the Hubble scale H0rc>3 and 3.5 at the 95% C.L. with and without uncertainties from spatial curvature. With spatial curvature, the limit from the normal branch is substantially assisted by the galaxy cross correlation which highlights its importance in constraining infrared modifications to gravity.

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Astrophysics
Dewey Decimal Classification:530 Physics
Scopus Subject Areas:Physical Sciences > Nuclear and High Energy Physics
Physical Sciences > Physics and Astronomy (miscellaneous)
Language:English
Date:September 2009
Deposited On:27 Feb 2010 12:47
Last Modified:04 Jun 2025 01:35
Publisher:American Physical Society
ISSN:1550-2368
Funders:Swiss National Foundation [200021-116696/1], WCU [R32-2008000-10130-0], University of Chicago through Grants NSF [PHY-0114422, PHY-0551142], U.S. Department of Energy [DE-FG02-90ER-40560, DE-AC02-98CH10886], David and Lucile Packard Foundation
OA Status:Green
Publisher DOI:https://doi.org/10.1103/PhysRevD.80.063536
Related URLs:http://arxiv.org/abs/0905.1112
Project Information:
  • Funder: SNSF
  • Grant ID:
  • Project Title: Swiss National Foundation [200021-116696/1]
  • Funder:
  • Grant ID:
  • Project Title: WCU [R32-2008000-10130-0]
  • Funder:
  • Grant ID:
  • Project Title: University of Chicago through Grants NSF [PHY-0114422, PHY-0551142]
  • Funder:
  • Grant ID:
  • Project Title: U.S. Department of Energy [DE-FG02-90ER-40560, DE-AC02-98CH10886]
  • Funder:
  • Grant ID:
  • Project Title: David and Lucile Packard Foundation
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Download PDF  'Cosmological constraints on DGP braneworld gravity with brane tension'.
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  • Content: Accepted Version
  • Description: Accepted manuscript, Version 1

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