Effect of inhomogeneities on the expansion rate of the Universe

Details Effect of inhomogeneities on the expansion rate of the Universe Effect of inhomogeneities on the expansion rate of the Universe

2004-09-03

arxiv.org/abs/hep-ph/0409038v2

Phys.Rev.D71:023524,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

19 pages, 2 figures Version 2 includes some changes in numerical factors and corrected typos. It is the version accepted for p

Scientific paper

10.1103/PhysRevD.71.023524

While the expansion rate of a homogeneous isotropic Universe is simply proportional to the square-root of the energy density, the expansion rate of an inhomogeneous Universe also depends on the nature of the density inhomogeneities. In this paper we calculate to second order in perturbation variables the expansion rate of an inhomogeneous Universe and demonstrate corrections to the evolution of the expansion rate. While we find that the mean correction is small, the variance of the correction on the scale of the Hubble radius is sensitive to the physical significance of the unknown spectrum of density perturbations beyond the Hubble radius.

Affiliated with

Also associated with

No associations

Rating

Effect of inhomogeneities on the expansion rate of the Universe 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 Effect of inhomogeneities on the expansion rate of the Universe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effect of inhomogeneities on the expansion rate of the Universe will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-529209