Self-accelerating the normal DGP branch

Details Self-accelerating the normal DGP branch Self-accelerating the normal DGP branch

2009-05-12

arxiv.org/abs/0905.1962v2

JCAP 0911:011,2009

Physics

High Energy Physics

High Energy Physics - Theory

9 pages, 2 figures, RevTeX 4. References added. Version to appear in JCAP

Scientific paper

10.1088/1475-7516/2009/11/011

We propose a generalised induced gravity brane-world model where the brane action contains an arbitrary f(R) term, R being the scalar curvature of the brane. We show that the effect of the f(R)term on the dynamics of a homogeneous and isotropic brane is twofold: (i) an evolving induced gravity parameter and (ii) a shift on the energy density of the brane. This new shift term, which is absent on the Dvali, Gabadadze and Porrati (DGP) model, plays a crucial role to self-accelerate the generalised normal DGP branch of our model. We analyse as well the stability of de Sitter self-accelerating solutions under homogeneous perturbations and compare our results with the standard 4-dimensional one. Finally, we obtain power law solutions which either correspond to conventional acceleration or super-acceleration of the brane. In the latter case, no phantom matter is invoked on the brane nor in the bulk.

Affiliated with

Also associated with

No associations

Rating

Self-accelerating the normal DGP branch 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 Self-accelerating the normal DGP branch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-accelerating the normal DGP branch will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-128215