Multidimensional perfect fluid cosmology with stable compactified internal dimensions

Details Multidimensional perfect fluid cosmology with stable compactified internal dimensions Multidimensional perfect fluid cosmology with stable compactified internal dimensions

1998-04-06

arxiv.org/abs/gr-qc/9804018v1

Class.Quant.Grav. 15 (1998) 2025-2035

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

11 pages, Latex2e, uses IOP packages, submitted to Class.Quant.Grav

Scientific paper

10.1088/0264-9381/15/7/017

Multidimensional cosmological models in the presence of a bare cosmological constant and a perfect fluid are investigated under dimensional reduction to 4-dimensional effective models. Stable compactification of the internal spaces is achieved for a special class of perfect fluids. The external space behaves in accordance with the standard Friedmann model. Necessary restrictions on the parameters of the models are found to ensure dynamical behavior of the external (our) universe in agreement with observations.

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