Semi-Analytical Analysis of Helium Synthesis in Brane Cosmology

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dc.creatorFabris, J. C.
dc.creatorMarinho, J. A. O.
dc.date2003-06-02
dc.date.accessioned2026-07-07T02:08:41Z
dc.date.available2026-07-07T02:08:41Z
dc.descriptionThe problem of primordial nucleosynthesis of helium in brane cosmology is studied using a semi-analytical method, where the Fermi-Dirac statistic is ignored. This semi-analytical method agrees with a more complete numerical calculation with a precision of order of 10% or better. The quadratic term for the matter density is the only source considered in the modified Einstein equations predicted by the brane configuration. This hypothesis is justified a posteriori. An agreement between theoretical and observational values for the helium abundance is obtained if the fundamental mass scale in five dimensions is of the order of $M \sim 5\times10^3 GeV$.
dc.descriptionLatex file, 13 pages, 1 figure and 1 table
dc.identifierhttps://arxiv.org/abs/astro-ph/0306051
dc.identifierhttp://arxiv.org/abs/astro-ph/0306051
dc.identifierGrav.Cosmol. 9 (2003) 270-276
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/6150
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Theory
dc.titleSemi-Analytical Analysis of Helium Synthesis in Brane Cosmology
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