Parameterizing the Effect of Dark Energy Perturbations on the Growth of Structures

Details Parameterizing the Effect of Dark Energy Perturbations on the Growth of Structures Parameterizing the Effect of Dark Energy Perturbations on the Growth of Structures

2008-07-22

arxiv.org/abs/0807.3343v3

Phys.Lett.B668:171-176,2008

Astronomy and Astrophysics

Astrophysics

18 LaTex pages, 7 figures. Typo corrected

Scientific paper

10.1016/j.physletb.2008.08.035

We present an analytical fit to the growth function of the dark matter perturbations when dark energy perturbations are present. The growth index depends upon the dark energy equation of state w, the speed of sound of the dark energy fluctuations, the dark matter abundance and the observed comoving scale. The growth index changes by ~5% for small speed of sound and large deviations of w from -1 with respect to its value in the limit of no dark energy perturbations.

Affiliated with

Also associated with

No associations

Rating

Parameterizing the Effect of Dark Energy Perturbations on the Growth of Structures 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 Parameterizing the Effect of Dark Energy Perturbations on the Growth of Structures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Parameterizing the Effect of Dark Energy Perturbations on the Growth of Structures will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-435264