Big bang nucleosynthesis as a probe of fundamental "constants"

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dc.creatorDent, Thomas
dc.creatorStern, Steffen
dc.date2007-10-25
dc.date.accessioned2026-07-07T11:12:36Z
dc.date.available2026-07-07T11:12:36Z
dc.descriptionBig Bang nucleosynthesis (BBN) is the earliest sensitive probe of the values of many fundamental particle physics parameters. We have found the leading linear dependences of primordial abundances on all relevant parameters of the standard BBN code, including binding energies and nuclear reaction rates. This enables us to set limits on possible variations of fundamental parameters. We find that 7Li is expected to be significantly more sensitive than other species to many fundamental parameters, a result which also holds for variations of coupling strengths in grand unified (GUT) models. Our work also indicates which areas of nuclear theory need further development if the values of ``constants'' are to be more accurately probed.
dc.descriptionRefereed article to be published in Nuclear Physics in Astrophysics III Proceedings, J. Phys. G. Special Issue. Based on work in collaboration with C. Wetterich (Heidelberg). 6 pages
dc.identifierhttps://arxiv.org/abs/0710.4854
dc.identifierhttp://arxiv.org/abs/0710.4854
dc.identifierJ.Phys.G35:014005,2008
dc.identifierdoi:10.1088/0954-3899/35/1/014005
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/191436
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Theory
dc.subjectNuclear Theory
dc.titleBig bang nucleosynthesis as a probe of fundamental "constants"
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