Crossing $w=-1$ by a single scalar on a Dvali-Gabadadze-Porrati brane

Details Crossing $w=-1$ by a single scalar on a Dvali-Gabadadze-Porrati brane Crossing $w=-1$ by a single scalar on a Dvali-Gabadadze-Porrati brane

2006-11-28

arxiv.org/abs/astro-ph/0611834v3

Phys.Rev.D75:023510,2007

Astronomy and Astrophysics

Astrophysics

8 pages, 4 figs, several references added, minor correction

Scientific paper

10.1103/PhysRevD.75.023510

Recent type Ia supernovae data seem to favor a dark energy model whose equation of state $w(z)$ crosses -1, which is a much more amazing problem than the acceleration of the universe. Either the case that $w(z)$ evolves from above -1 to below -1 or the case that $w(z)$ runs from below -1 to above -1, is consistent with present data. In this paper we show that it is possible to realize the crossing behaviours of both of the two cases by only a single scalar field in frame of Dvali-Gabadadze-Porrati braneworld. At the same time we prove that there does not exist scaling solution in a universe with dust.

Affiliated with

Also associated with

No associations

Rating

Crossing $w=-1$ by a single scalar on a Dvali-Gabadadze-Porrati brane 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 Crossing $w=-1$ by a single scalar on a Dvali-Gabadadze-Porrati brane, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Crossing $w=-1$ by a single scalar on a Dvali-Gabadadze-Porrati brane will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-350061