Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
1994-05-09
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
21 pages, LaTeX, Potsdam University, preprint AIP 94-04
Scientific paper
Mutidimensional cosmological models with $n\left( n\geq 2\right) $ Einstein spaces $M_i\left( i=1,\ldots ,n\right) $ are investigated. The cosmological constant and homogeneous minimally coupled scalar field as a matter sources are considered. The scalar field has a potential of general form depending on the scalar field as well as on the scale factors of $M_i$ . The general condition of existence of the solutions with spontaneous compactification is obtained and applied to physically important cases. Two particular kinds of solutions are found. One of them has a wormhole-type continuation into the Euclidean region. Another one represents the generalization of the de Sitter universe to the multidimensional model under consideration.
Bleyer Ulrich
Zhuk Alexander
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