Pseudo-redundant vacuum energy

Details Pseudo-redundant vacuum energy Pseudo-redundant vacuum energy

2008-01-29

arxiv.org/abs/0801.4526v2

Phys.Rev.D78:043507,2008

Physics

High Energy Physics

High Energy Physics - Theory

39 pages. Appendix added. Version to appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.78.043507

We discuss models that can account for today's dark energy. The underlying cosmological constant may be Planck scale but starts as a redundant coupling which can be eliminated by a field redefinition. The observed vacuum energy arises when the redundancy is explicitly broken, say by a non-minimal coupling to curvature. We give a recipe for constructing models, including R + 1/R type models, that realize this mechanism and satisfy all solar system constraints on gravity. A similar model, based on Gauss-Bonnet gravity, provides a technically natural explanation for dark energy and exhibits an interesting see-saw behavior: a large underlying cosmological constant gives rise to both low and high curvature solutions. Such models could be statistically favored in the string landscape.

Affiliated with

Also associated with

No associations

Rating

Pseudo-redundant vacuum 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 Pseudo-redundant vacuum energy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pseudo-redundant vacuum energy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-186013