Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· arXiv e-print (arXiv:0905.1112)
· References in the article
· Citations to the Article (9) (Citation History)
· Refereed Citations to the Article
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Cosmological constraints on DGP braneworld gravity with brane tension
Authors:
Lombriser, Lucas; Hu, Wayne; Fang, Wenjuan; Seljak, Uroš
Affiliation:
AA(Institute for Theoretical Physics, University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland), AB(Kavli Institute for Cosmological Physics, Department of Astronomy and Astrophysics, Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA), AC(Department of Physics, Columbia University, New York, New York 10027, USA; Brookhaven National Laboratory, Upton, New York 11973, USA), AD(Institute for Theoretical Physics, University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland; Physics and Astronomy Department, University of California, and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA; Ewha University, Seoul 120-750, Korea)
Publication:
Physical Review D, vol. 80, Issue 6, id. 063536 (PhRvD Homepage)
Publication Date:
09/2009
Origin:
APS
Keywords:
Observational cosmology, Higher-dimensional gravity and other theories of gravity, Modified theories of gravity, Experimental tests of gravitational theories
PACS Keywords:
Observational cosmology, Higher-dimensional gravity and other theories of gravity, Modified theories of gravity, Experimental tests of gravitational theories
DOI:
10.1103/PhysRevD.80.063536
Bibliographic Code:
2009PhRvD..80f3536L

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.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
   

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints