Impact of the matter density uncertainty on the dark energy reconstruction

Details Impact of the matter density uncertainty on the dark energy reconstruction Impact of the matter density uncertainty on the dark energy reconstruction

2009-03-04

arxiv.org/abs/0903.0617v2

Phys.Rev.D79:083516,2009

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

6 pages, 3 figures, published version

Scientific paper

10.1103/PhysRevD.79.083516

In this paper we study the impact of the fractional matter density uncertainty in the reconstruction of the equation of state of dark energy. We consider both standard reconstruction methods, based on the dynamical effect that dark energy has on the expansion of the Universe, as well as non-standard methods, in which the evolution of the dark energy equation of state with redshift is inferred through the variation of fundamental couplings such as the fine structure constant, $\alpha$, or the proton-to-electron mass ratio, $\mu$. We show that the negative impact of the matter density uncertainty in the dark energy reconstruction using varying couplings may be very small compared to standard reconstruction methods. We also briefly discuss other fundamental questions which need to be answered before varying couplings can be successfully used to probe the nature of the dark energy.

Affiliated with

Also associated with

No associations

Rating

Impact of the matter density uncertainty on the dark energy reconstruction 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 Impact of the matter density uncertainty on the dark energy reconstruction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Impact of the matter density uncertainty on the dark energy reconstruction will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-368158