Nucleosynthesis and the variation of fundamental couplings

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dc.creatorMueller, Christian M.
dc.creatorSchaefer, Gregor
dc.creatorWetterich, Christof
dc.date2004-05-19
dc.date.accessioned2026-07-07T11:57:05Z
dc.date.available2026-07-07T11:57:05Z
dc.descriptionWe determine the influence of a variation of the fundamental ``constants'' on the predicted helium abundance in Big Bang Nucleosynthesis. The analytic estimate is performed in two parts: the first step determines the dependence of the helium abundance on the nuclear physics parameters, while the second step relates those parameters to the fundamental couplings of particle physics. This procedure can incorporate in a flexible way the time variation of several couplings within a grand unified theory while keeping the nuclear physics computation separate from any model-dependent assumptions.
dc.description8 pages, no figures
dc.identifierhttps://arxiv.org/abs/astro-ph/0405373
dc.identifierhttp://arxiv.org/abs/astro-ph/0405373
dc.identifierPhys.Rev.D70:083504,2004
dc.identifierdoi:10.1103/PhysRevD.70.083504
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/205758
dc.subjectAstrophysics
dc.titleNucleosynthesis and the variation of fundamental couplings
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