Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2002-08-30
Class.Quant.Grav. 19 (2002) 4863-4876
Physics
High Energy Physics
High Energy Physics - Theory
11 pages, 3 figures, LaTeX2e, accepted for publication in Classical and Quantum Gravity
Scientific paper
10.1088/0264-9381/19/19/306
By considering 5--dimensional cosmological models with a bulk filled with a pressureless scalar field; equivalently dust matter, and a negative cosmological constant, we have found a regular instantonic solution which is free from any singularity at the origin of the extra--coordinate. This instanton describes 5--dimensional asymptotically anti de Sitter wormhole, when the bulk has a topology R times S^4. Compactified brane-world instantons which are built up from such instantonic solution describe either a single brane or a string of branes. Their analytical continuation to the pseudo--Riemannian metric can give rise to either 4-dimensional inflating branes or solutions with the same dynamical behaviour for extra--dimension and branes, in addition to multitemporal solutions. Dust brane-world models with arbitrary dimensions (D >= 5) as well as other spatial topologies are also briefly discussed.
Bouhmadi-Lopez Mariam
González-Díaz Pedro F.
Zhuk Alexander
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