Spherical Curvature Inhomogeneities in String Cosmology
High Energy Physics - Theory
2009-10-30 v1 Astrophysics
General Relativity and Quantum Cosmology
Abstract
We study the evolution of non-linear spherically symmetric inhomogeneities in string cosmology. Friedmann solutions of different spatial curvature are matched to produce solutions which describe the evolution of non-linear density and curvature inhomogeneities. The evolution of bound and unbound inhomogeneities are studied. The problem of primordial black hole formation is discussed in the string cosmological context and the pattern of evolution is determined in the pre- and post-big-bang phases of evolution.
Cite
@article{arxiv.hep-th/9710018,
title = {Spherical Curvature Inhomogeneities in String Cosmology},
author = {John D. Barrow and Kerstin E. Kunze},
journal= {arXiv preprint arXiv:hep-th/9710018},
year = {2009}
}
Comments
19 pages, Latex, 4 figures