NL repository
menu
검색
Library
Browse
Communities & Collections
By Date
Authors
Titles
Subject
My Repository
My Account
Receive email updates
Edit Profile
DSpace at EWHA
자연과학대학
물리학전공
Journal papers
View : 579 Download: 198
Cosmological constraints on DGP braneworld gravity with brane tension
Title
Cosmological constraints on DGP braneworld gravity with brane tension
Authors
Lombriser L.
;
Hu W.
;
Fang W.
;
Seljak U.
Ewha Authors
Uros Seljak
SCOPUS Author ID
Uros Seljak
Issue Date
2009
Journal Title
Physical Review D - Particles, Fields, Gravitation and Cosmology
ISSN
1550-7998
Citation
Physical Review D - Particles, Fields, Gravitation and Cosmology vol. 80, no. 6
Indexed
SCI; SCIE; SCOPUS
Document Type
Article
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. © 2009 The American Physical Society.
DOI
10.1103/PhysRevD.80.063536
Appears in Collections:
자연과학대학
>
물리학전공
>
Journal papers
Files in This Item:
Cosmological constraints on DGP braneworld gravity with brane tension.pdf
(422.27 kB)
Download
Export
RIS (EndNote)
XLS (Excel)
XML
Show full item record
Find@EWHA
트윗하기
BROWSE
Communities & Collections
By Date
Authors
Titles
Subject