Nucleosynthesis and the variation of fundamental couplings

Journal Article · Fri Oct 15 00:00:00 EDT 2004 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.70.083504· OSTI ID:20705438

Mueller, Christian M; Schaefer, Gregor; Wetterich, Christof ^[1]

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1. Institut fuer Theoretische Physik, Philosophenweg 16, 69120 Heidelberg (Germany)

We 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 GUT model dependence.

• OSTI ID: 20705438
• Journal Information: Physical Review. D, Particles Fields, Vol. 70, Issue 8; Other Information: DOI: 10.1103/PhysRevD.70.083504; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COSMOLOGY
COUPLING CONSTANTS
ELEMENT ABUNDANCE
FUNDAMENTAL CONSTANTS
GRAND UNIFIED THEORY
HELIUM
NUCLEOSYNTHESIS
VARIATIONS