Spherical Curvature Inhomogeneities in String Cosmology

Details Spherical Curvature Inhomogeneities in String Cosmology Spherical Curvature Inhomogeneities in String Cosmology

1997-10-02

arxiv.org/abs/hep-th/9710018v1

Physics

High Energy Physics

High Energy Physics - Theory

19 pages, Latex, 4 figures

Scientific paper

10.1103/PhysRevD.57.2255

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.

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