Puncture of gravitating domain walls

Details Puncture of gravitating domain walls Puncture of gravitating domain walls

1999-12-20

arxiv.org/abs/hep-th/9912166v2

Phys.Lett. B475 (2000) 46-55

Physics

High Energy Physics

High Energy Physics - Theory

13 pages REVTeX, 3 .ps figures, added some references - version to appear in Physics Letters B

Scientific paper

10.1016/S0370-2693(00)00067-8

We investigate the semi-classical instability of vacuum domain walls to processes where the domain walls decay by the formation of closed string loop boundaries on their worldvolumes. Intuitively, a wall which is initially spherical may `pop', so that a hole corresponding to a string boundary component on the wall, may form. We find instantons, and calculate the rates, for such processes. We show that after puncture, the hole grows exponentially at the same rate that the wall expands. It follows that the wall is never completely thermalized by a single expanding hole; at arbitrarily late times there is still a large, thin shell of matter which may drive an exponential expansion of the universe. We also study the situation where the wall is subjected to multiple punctures. We find that in order to completely annihilate the wall by this process, at least four string loops must be nucleated. We argue that this process may be relevant in certain brane-world scenarios, where the universe itself is a domain wall.

Affiliated with

Also associated with

No associations

Rating

Puncture of gravitating domain walls 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 Puncture of gravitating domain walls, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Puncture of gravitating domain walls will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-714163