Observational Constraints on Exponential Gravity

Details Observational Constraints on Exponential Gravity Observational Constraints on Exponential Gravity

2010-10-11

arxiv.org/abs/1010.2058v1

Phys.Rev.D82:103515,2010

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

14pages, 3 figures, accepted by PRD

Scientific paper

10.1103/PhysRevD.82.103515

We study the observational constraints on the exponential gravity model of f(R)=-beta*Rs(1-e^(-R/Rs)). We use the latest observational data including Supernova Cosmology Project (SCP) Union2 compilation, Two-Degree Field Galaxy Redshift Survey (2dFGRS), Sloan Digital Sky Survey Data Release 7 (SDSS DR7) and Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP7) in our analysis. From these observations, we obtain a lower bound on the model parameter beta at 1.27 (95% CL) but no appreciable upper bound. The constraint on the present matter density parameter is 0.245< Omega_m^0<0.311 (95% CL). We also find out the best-fit value of model parameters on several cases.

Affiliated with

Also associated with

No associations

Rating

Observational Constraints on Exponential Gravity does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Observational Constraints on Exponential Gravity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observational Constraints on Exponential Gravity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-658701