Non-singular solutions in multidimensional cosmology with a perfect fluid: acceleration and variation of G

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dc.creatorIvashchuk, V. D.
dc.creatorKononogov, S. A.
dc.creatorMelnikov, V. N.
dc.creatorNovello, M.
dc.date2006-12-25
dc.date2008-03-09
dc.date.accessioned2026-07-07T10:38:01Z
dc.date.available2026-07-07T10:38:01Z
dc.descriptionExact solutions with an exponential behaviour of the scale factors are considered in a multidimensional cosmological model describing the dynamics of n+1 Ricci-flat factor spaces M_i in the presence of a one-component perfect fluid. The pressures in all spaces are proportional to the density: p_i = w_i ρ, i = 0,...,n. Solutions with accelerated expansion of our 3-space M_0 and a small enough variation of the gravitational constant G are found. These solutions exist for two branches of the parameter w_0. The first branch describes superstiff matter with w_0 > 1, the second one may contain phantom matter with w_0 < - 1.
dc.description6 pages, Latex, G&C style, few typos corrected
dc.identifierhttps://arxiv.org/abs/hep-th/0612264
dc.identifierhttp://arxiv.org/abs/hep-th/0612264
dc.identifierGrav.Cosmol.12:273-278,2006
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/180577
dc.subjectHigh Energy Physics - Theory
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleNon-singular solutions in multidimensional cosmology with a perfect fluid: acceleration and variation of G
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