Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Observational constraints on modified gravity models and the Poincaré dodecahedral topology

Observational constraints on modified gravity models and the Poincaré dodecahedral topology We study observational constraints on models that account for the accelerated expansion of the universe via infrared modifications to general relativity, namely, the Dvali-Gabadadze-Porrati braneworld model as well as the Dvali-Turner and Cardassian models. We find that significant constraints can be placed on the parameters of each model using type Ia supernovae data together with the baryon acoustic peak in the large-scale correlation function of the Sloan Digital Sky Survey of luminous red galaxies and the Cosmic Microwave Background Radiation shift parameter data. Moreover, by considering the Poincaré dodecahedral space as the circles-in-the-sky observable spatial topology, we show that the detection of a such a nontrivial topology would provide relevant additional constraints, particularly on the curvature parameter, for all models. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review D American Physical Society (APS)

Observational constraints on modified gravity models and the Poincaré dodecahedral topology

10 pages

Loading next page...
 
/lp/american-physical-society-aps/observational-constraints-on-modified-gravity-models-and-the-poincar-Y8TnTWgLBB

References

References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.

Publisher
American Physical Society (APS)
Copyright
Copyright © 2006 The American Physical Society
ISSN
1550-2368
DOI
10.1103/PhysRevD.73.103521
Publisher site
See Article on Publisher Site

Abstract

We study observational constraints on models that account for the accelerated expansion of the universe via infrared modifications to general relativity, namely, the Dvali-Gabadadze-Porrati braneworld model as well as the Dvali-Turner and Cardassian models. We find that significant constraints can be placed on the parameters of each model using type Ia supernovae data together with the baryon acoustic peak in the large-scale correlation function of the Sloan Digital Sky Survey of luminous red galaxies and the Cosmic Microwave Background Radiation shift parameter data. Moreover, by considering the Poincaré dodecahedral space as the circles-in-the-sky observable spatial topology, we show that the detection of a such a nontrivial topology would provide relevant additional constraints, particularly on the curvature parameter, for all models.

Journal

Physical Review DAmerican Physical Society (APS)

Published: May 15, 2006

There are no references for this article.