Chameleon Dark Energy

Details Chameleon Dark Energy Chameleon Dark Energy

2004-10-05

arxiv.org/abs/astro-ph/0410103v1

Astronomy and Astrophysics

Astrophysics

5 pages, 2 figures. To appear in the proceedings of the "Phi in the Sky" conference, 8-10 July 2004, Porto, Portugual

Scientific paper

10.1063/1.1835177

Chameleons are scalar fields whose mass depends on the environment, specifically on the ambient matter density. While nearly massless in the cosmos, where the matter density is tiny, their mass is of order of an inverse millimeter on Earth, where the density is high. In this note, we review how chameleons can satisfy current experimental constraints on deviations from General Relativity (GR). Moreover, we study the cosmological evolution with a chameleon field and show the existence of an attractor solution, akin to the tracker solution in quintessence models. We discuss how chameleons can naturally drive the observed acceleration of the universe

Affiliated with

Also associated with

No associations

Rating

Chameleon Dark Energy 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 Chameleon Dark Energy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chameleon Dark Energy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-102042