Topology and Signature Changes in Braneworlds

Details Topology and Signature Changes in Braneworlds Topology and Signature Changes in Braneworlds

2004-02-03

arxiv.org/abs/hep-th/0402024v4

Class.Quant.Grav.21:2919-2936,2004

Physics

High Energy Physics

High Energy Physics - Theory

26 pages, 8 figures, references and comments are added, minor revisions and a number of additional footnotes added, error corr

Scientific paper

10.1088/0264-9381/21/12/009

It has been believed that topology and signature change of the universe can only happen accompanied by singularities, in classical, or instantons, in quantum, gravity. In this note, we point out however that in the braneworld context, such an event can be understood as a classical, smooth event. We supply some explicit examples of such cases, starting from the Dirac-Born-Infeld action. Topology change of the brane universe can be realised by allowing self-intersecting branes. Signature change in a braneworld is made possible in an everywhere Lorentzian bulk spacetime. In our examples, the boundary of the signature change is a curvature singularity from the brane point of view, but nevertheless that event can be described in a completely smooth manner from the bulk point of view.

Affiliated with

Also associated with

No associations

Rating

Topology and Signature Changes in Braneworlds 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 Topology and Signature Changes in Braneworlds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Topology and Signature Changes in Braneworlds will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-565347