Cosmological expansion on a dilatonic brane-world

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dc.creatorMennim, A.
dc.creatorBattye, R. A.
dc.date2000-08-24
dc.date2001-04-17
dc.date.accessioned2026-07-07T11:31:49Z
dc.date.available2026-07-07T11:31:49Z
dc.descriptionIn this paper we study brane-world scenarios with a bulk scalar field, using a covariant formalism to obtain a 4D Einstein equation via projection onto the brane. We discuss, in detail, the effects of the bulk on the brane and how the scalar field contribute to the gravitational effects. We also discuss choice of conformal frame and show that the frame selected by the induced metric provides a natural choice. We demonstrate our formalism by applying it to cosmological scenarios of Randall-Sundrum and Horava-Witten type models. Finally we consider the cosmology of models where the scalar field couples non-minimally to the matter on the brane. This gives rise to a novel scenario where the universe expands from a finite scale factor with an initial period of accelerated expansion, thus avoiding the singularity and flatness problem of the standard big bang model.
dc.description20 pages - Version to appear in Classical and Quantum Gravity. New section added on conformal rescaling of the metric. Some other minor changes made and references added
dc.identifierhttps://arxiv.org/abs/hep-th/0008192
dc.identifierhttp://arxiv.org/abs/hep-th/0008192
dc.identifierClass.Quant.Grav.18:2171-2194,2001
dc.identifierdoi:10.1088/0264-9381/18/11/313
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/197395
dc.subjectHigh Energy Physics - Theory
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Phenomenology
dc.titleCosmological expansion on a dilatonic brane-world
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