INTEGRABLE MULTICOMPONENT PERFECT FLUID MULTIDIMENSIONAL COSMOLOGY .2. SCALAR FIELDS

Citation
U. Kasper et al., INTEGRABLE MULTICOMPONENT PERFECT FLUID MULTIDIMENSIONAL COSMOLOGY .2. SCALAR FIELDS, General relativity and gravitation, 29(9), 1997, pp. 1123-1162
Citations number
50
Categorie Soggetti
Physics
ISSN journal
00017701
Volume
29
Issue
9
Year of publication
1997
Pages
1123 - 1162
Database
ISI
SICI code
0001-7701(1997)29:9<1123:IMPFMC>2.0.ZU;2-0
Abstract
We consider anisotropic cosmological models with a universe of dimensi on 4 or higher, factorized into n greater than or equal to 2 Ricci-fla t spaces, containing an m-component perfect fluid of m non-interacting homogeneous minimally coupled scalar fields under special conditions. We describe the dynamics of the universe: It has a Kasner-like behavi our near the singularity and isotropizes during the expansion to infin ity. Some of the models considered are integrable, and classical as we ll as quantum solutions are found. Some solutions produce inflation fr om ''nothing''. There exist classical asymptotically anti-de Sitter wo rmholes, and quantum wormholes with discrete spectrum.