Singularities In Scalar-Tensor Cosmologies

Details Singularities In Scalar-Tensor Cosmologies Singularities In Scalar-Tensor Cosmologies

1997-08-05

arxiv.org/abs/hep-th/9708008v1

Phys.Rev.D57:811-822,1998

Physics

High Energy Physics

High Energy Physics - Theory

23 pages, latex, no figures

Scientific paper

10.1103/PhysRevD.57.811

In this article, we examine the possibility that there exist special scalar-tensor theories of gravity with completely nonsingular FRW solutions. Our investigation in fact shows that while most probes living in such a Universe never see the singularity, gravity waves always do. This is because they couple to both the metric and the scalar field, in a way which effectively forces them to move along null geodesics of the Einstein conformal frame. Since the metric of the Einstein conformal frame is always singular for configurations where matter satisfies the energy conditions, the gravity wave world lines are past inextendable beyond the Einstein frame singularity, and hence the geometry is still incomplete, and thus singular. We conclude that the singularity cannot be entirely removed, but only be made invisible to most, but not all, probes in the theory.

Affiliated with

Also associated with

No associations

Rating

Singularities In Scalar-Tensor Cosmologies 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 Singularities In Scalar-Tensor Cosmologies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Singularities In Scalar-Tensor Cosmologies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-550610