Construction of Exact Solutions in Two-Fields Models and the Crossing of the Cosmological Constant Barrier

Details Construction of Exact Solutions in Two-Fields Models and the Crossing of the Cosmological Constant Barrier Construction of Exact Solutions in Two-Fields Models and the Crossing of the Cosmological Constant Barrier

2006-12-18

arxiv.org/abs/astro-ph/0612487v3

Teor.Mat.Fiz. 155:47-61,2008; Theor.Math.Phys.155:544-556,2008

Astronomy and Astrophysics

Astrophysics

LaTeX, 18 pages, 3 figures, references added, accepted for publication in Theor. Math. Phys

Scientific paper

10.1007/s11232-008-0045-4

A dark energy model with a phantom scalar field, an usual scalar field and the string field theory inspired polynomial potential has been constructed. A two-parameter set of exact solutions to the Friedmann equations has been found. We have constructed such string inspired potential that some exact solutions correspond to the state parameter $w_{DE}>-1$ at large time, whereas other ones correspond to $w_{DE}<-1$ at large time. We demonstrate that the superpotential method is very effective to seek new exact solutions. We also present a two-fields model with a polynomial potential and the state parameter, which crosses the cosmological barrier infinitely often.

Affiliated with

Also associated with

No associations

Rating

Construction of Exact Solutions in Two-Fields Models and the Crossing of the Cosmological Constant Barrier 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 Construction of Exact Solutions in Two-Fields Models and the Crossing of the Cosmological Constant Barrier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Construction of Exact Solutions in Two-Fields Models and the Crossing of the Cosmological Constant Barrier will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-314114