Brane tunneling and the Brane World scenario
arXiv:hep-th/0009207
Abstract
Fate of branes in external fields is reviewed. Spontaneous creation of the Brane World in with external field is described. The resulting Brane World consists of a flat 4d spatially finite expanding Universe and curved expanding "regulator" branes. All branes have a positive tension.
13 pages, contribution to the Proceedings of E.S.Fradkin Memorial Conference, Moscow, 2000