Electric S-brane solutions corresponding to rank-2 Lie algebras: acceleration and small variation of G

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dc.creatorIvashchuk, V. D.
dc.creatorKononogov, S. A.
dc.creatorMelnikov, V. N.
dc.date2008-12-30
dc.date.accessioned2026-07-07T12:55:23Z
dc.date.available2026-07-07T12:55:23Z
dc.descriptionElectric S-brane solutions with two non-composite electric branes and a set of l scalar fields are considered. The intersection rules for branes correspond to Lie algebras A_2, C_2 and G_2. The solutions contain five factor spaces. One of them, M_0, is interpreted as our 3-dimensional space. It is shown that there exists a time interval where accelerated expansion of our 3-dimensional space is compatible with a small enough variation of the effective gravitational constant G(τ). This interval contains τ_0, a point of minimum of the function G(τ). A special solution with two phantom scalar fields is analyzed and it is shown that in the vicinity of the point τ_0 the time variation of G(τ) (calculated in the linear approximation) decreases in the sequence of Lie algebras A_2, C_2 and G_2.
dc.description13 pages, LaTex, no figures
dc.identifierhttps://arxiv.org/abs/0901.0025
dc.identifierhttp://arxiv.org/abs/0901.0025
dc.identifierGrav.Cosmol.14:235-240,2008
dc.identifierdoi:10.1134/S0202289308030055
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/224236
dc.subjectHigh Energy Physics - Theory
dc.titleElectric S-brane solutions corresponding to rank-2 Lie algebras: acceleration and small variation of G
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