Linear and non-Linear Instabilities in Unified Dark Energy Models

Details Linear and non-Linear Instabilities in Unified Dark Energy Models Linear and non-Linear Instabilities in Unified Dark Energy Models

2007-11-27

arxiv.org/abs/0711.4288v2

Phys. Rev. D77:063515,2008

Astronomy and Astrophysics

Astrophysics

6 pages, accepted for publication in Physical Review D

Scientific paper

10.1103/PhysRevD.77.063515

We revisit the paradigm of unified dark energy discussing in detail the averaging problem in this type of scenarios, highlighting the need for a full non-linear treatment. We also address the question of if and how models with one or several dark fluids can be observationally distinguished. Simpler and physically clearer derivations of some key results, most notably on the relation between the generalized Chaplygin gas and the standard ($\Lambda$CDM) `concordance' model and on a Jeans-type small-scale instability of some coupled dark energy/dark matter models are presented.

Affiliated with

Also associated with

No associations

Rating

Linear and non-Linear Instabilities in Unified Dark Energy Models 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 Linear and non-Linear Instabilities in Unified Dark Energy Models, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Linear and non-Linear Instabilities in Unified Dark Energy Models will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-686977