Nucleosynthesis and the time dependence of fundamental couplings

1994/11/11 by Bruce A. Campbell, Keith A. Olive · 6 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Particle physics theoretical and experimental studies #astro-ph #hep-ph

paper · pdf · doi:10.1016/0370-2693(94)01652-s

published as Phys.Lett.B345:429-434,1995 · 10 pages, latex, no figures

arxiv created 1994/11/11 · openalex publication_date 1995/02/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We consider the effects of the time dependence of couplings due to their dependence on a dilaton field, as occurs in superstring theory, as well as in gravity theories of the Jordan-Brans-Dicke type. Because the scale parameters of couplings set by dimensional transmutation depend exponentially on the dilaton vev, we may obtain stringent limits on the shift of the dilaton from the requirement that the induced shift in the couplings not vitiate the successful calculations of element abundances for big-bang nucleosynthesis. These limits can be substantially stronger than those obtained directly from the dilaton-induced change in the gravitational coupling.

Cited by

• Evolution of the fine structure constant driven by dark matter and the cosmological constant
• Constraints on the variations of the fundamental couplings
• Early universe constraints on time variation of fundamental constants
• A time variation of proton-electron mass ratio and grand unification
• Time variations in the scale of grand unification
• The fundamental constants and their variation: observational and theoretical status