Topological defect brane-world models
Abstract
5-dimensional homogeneous and isotropic models with a bulk cosmological constant and a minimally coupled scalar field are considered. We have found that in special cases the scalar field can mimic a frustrated (i.e. disordered) networks of topological defects: cosmic strings, domain walls and hyperdomain walls. This equivalence enabled us to obtain 5-dimensional instantonic solutions which can be used to construct brane-world models. In some cases, their analytic continuation to a Lorentzian metric signature give rise to either 4-dimensional flat or inflating branes. Models with arbitrary dimensions (D 5) are also briefly discussed.
Cite
@article{arxiv.hep-th/0207170,
title = {Topological defect brane-world models},
author = {M. Bouhmadi-Lopez and P. F. Gonzalez-Diaz and A. Zhuk},
journal= {arXiv preprint arXiv:hep-th/0207170},
year = {2014}
}
Comments
10 pages, LateX2e, a few comments added and misprints corrected. To be published in Gravitation and Cosmology