Cosmic Steps in Modeling Dark Energy

Details Cosmic Steps in Modeling Dark Energy Cosmic Steps in Modeling Dark Energy

2009-08-18

arxiv.org/abs/0908.2477v2

Physics

High Energy Physics

High Energy Physics - Theory

6 pages, 5 figures, structure improved, reference added, results unchanged

Scientific paper

The past and recent data analyses gave some hints of steps in dark energy. Considering the dark energy as a dynamical scalar field, we investigate several models with various steps: a step in the scalar potential, a step in the kinetic term, a step in the energy density and a step in the equation-of-state parameter w. These toy models provide a workable mechanism to generate steps and features of dark energy. Remarkably, a single real scalar can cross w=-1 dynamically with a step in the kinetic term.

Affiliated with

Also associated with

No associations

Rating

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

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-8143