Density perturbations driven by the irregular spatial curvature in inhomogeneous cosmological models

Details Density perturbations driven by the irregular spatial curvature in inhomogeneous cosmological models Density perturbations driven by the irregular spatial curvature in inhomogeneous cosmological models

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...394..401t&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 394, no. 2, Aug. 1, 1992, p. 401-408.

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Astronomical Models, Computational Astrophysics, Cosmology, Density Distribution, Perturbation Theory, Universe, Curvature, Evolution (Development), Inhomogeneity, Newton Methods, Relativistic Effects

Scientific paper

The behaviors of inhomogeneities in the realistic universe are often described using an approximate model consisting of a homogeneous model plus its perturbations. There is a possibility, however, that true inhomogeneities include perturbations in a mode different from the above perturbations. In this paper it is shown that the density perturbations driven by the irregular spatial curvature are in such an independent mode. The growth factor of the latter perturbations is a square of that in the usual linear adiabatic perturbation, and so, if the perturbations of this mode are dominant, they will have important influences upon the problem of structure formation.

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