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arXiv · hep-th/0202119

Dynamical Compactification, Standard Cosmology and the Accelerating Universe

N. Mohammedi
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Abstract

A cosmological model based on Kaluza-Klein theory is studied. A metric, in which the scale factor of the compact space evolves as an inverse power of the radius of the observable universe, is constructed. The Freedmann-Robertson-Walker equations of standard four-dimensional cosmology are obtained precisely. The pressure in our universe is an effective pressure expressed in terms of the components of the higher dimensional energy-momentum tensor. In particular, this effective pressure could be negative and might therefore explain the acceleration of our present universe. A special feature of this model is that, for a suitable choice of the parameters of the metric, the higher dimensional gravitational coupling constant could be negative.

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N. Mohammedi. 2002-02-19. Dynamical Compactification, Standard Cosmology and the Accelerating Universe. https://doi.org/10.1103/physrevd.65.104018

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