Large Scale Cosmological Inhomogeneities, Inflation and Acceleration Without Dark Matter

Details Large Scale Cosmological Inhomogeneities, Inflation and Acceleration Without Dark Matter Large Scale Cosmological Inhomogeneities, Inflation and Acceleration Without Dark Matter

2005-03-31

arxiv.org/abs/astro-ph/0504004v1

Astronomy and Astrophysics

Astrophysics

10 pages, Latex file, no figures

Scientific paper

We describe the universe as a local, inhomogeneous spherical bubble embedded in a flat matter dominated FLRW universe. Generalized exact Friedmann equations describe the expansion of the universe and an early universe inflationary de Sitter solution is obtained. A non-perturbative expression for the deceleration parameter q is derived that can possibly describe the acceleration of the universe without dark energy, due to the effects associated with very long wave length super-horizon inflationary perturbations. The suggestion by Kolbe et al. [9] that long wave length super-horizon inflationary modes can affect a local observable through inhomogeneities is considered in the light of our exact inhomogeneous model.

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