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Higher-dimensional cosmological solutions with action of scalar and metric fields

Authors:	Xinzhou Li Jianjun Xu

Institution:	(1) Institut für Theoretische Physik, Kiel Universität, D-2300 Kiel, West Germany;(2) Department of Physics, Fudan University, Shanghai, China

Abstract:	An investigation is made of higher-dimensional (D5) cosmological solutions with action of scalar and metric fields for which a matter term is added. We restrict our attention to the most symmetric solutions with the structureM ^D–2×S ². We present the variant cosmological solutions for the symmetry breaking patternGSU(2)×U(1) (type IA, IIA) and patternGSO(3) (type IB, IIB). InD=6 case type IA is interesting for cosmology, which corresponds to a conformally invariant theory.

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