Abstract
Multidimensional cosmological models with a space-time consisting ofn (n ≥2) Einstein spaces are investigated for a special class of multicomponent perfect fluid as a matter source. The dynamical behaviour of the universe is described. In the case of static internal spaces the external space evolves like a Friedmann universe with changing effective equation of state. Some of the models considered are integrable and classical as well as quantum solutions are found. Some of them represent wormholes. Quantum wormholes have a discrete spectrum.
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Kasper, U., Zhuk, A. Integrable multicomponent perfect fluid multidimensional cosmology. I. Gen Relat Gravit 28, 1269–1292 (1996). https://doi.org/10.1007/BF02107384
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DOI: https://doi.org/10.1007/BF02107384