Multidimensional world, inflation and modern acceleration

Abstract

Starting from pure multidimensional gravity with curvature-nonlinear terms but no matter fields in the initial action, we obtain a cosmological model with two effective scalar fields related to the size of two extra factor spaces. The model includes both an early inflationary stage and that of modern accelerated expansion and satisfies the observational data. There are no small parameters; the effective inflaton mass depends on the initial conditions which explain its small value as compared to the Planck mass. At the modern stage, the size of extra dimensions slowly increases, therefore this model predicts drastic changes in the physical laws of our Universe in the remote future.

7 two-column revtex pages, 2 figures

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Cited by in corpus (16)

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• Variations of $\alpha$ and $G$ from nonlinear multidimensional gravity
• On cosmology in nonlinear multidimensional gravity with multiple factor spaces
• The universe formation by a space reduction cascade with random initial parameters
• Gravity with Higher Derivatives in D-Dimensions
• Cosmology in nonlinear multidimensional gravity and the Casimir effect
• Constraints on scalar coupling to electromagnetism
• Self-tuning inflation
• Spontaneous branes formation
• Formation and evolution of a 2-brane structure in multidimensional $f(R)$ gravity
• Formation and Search of Large Scale Antimatter Regions
• Low energy physics and properties of extra space