Dark Matter and Dark Energy from a single scalar field

Details Dark Matter and Dark Energy from a single scalar field Dark Matter and Dark Energy from a single scalar field

2005-03-07

arxiv.org/abs/hep-th/0503062v1

Physics

High Energy Physics

High Energy Physics - Theory

Poster presented at the XXII Texas Symposium on Relativistic Astrophysics, Stanford University, December 2004, (TSRA04, PSN110

Scientific paper

The strong CP problem was solved by Peccei & Quinn by introducing axions, which are a viable candidate for DM. Here the PQ approach is modified so to yield also Dark Energy (DE), which arises in fair proportions, without tuning any extra parameter. DM and DE arise from a single scalar field and, in the present ecpoch, are weakly coupled. Fluctuations have a fair evolution. The model is also fitted to WMAP release, using a MCMC technique, and performs as well as LCDM, coupled or uncoupled Dynamical DE. Best-fit cosmological parameters for different models are mostly within 2-$\sigma$ level. The main peculiarity of the model is to favor high values of the Hubble parameter.

Affiliated with

Also associated with

No associations

Rating

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

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-557435