Primordial nucleosynthesis with a varying fine structure constant: An improved estimate
نویسندگان
چکیده
منابع مشابه
Big bang nucleosynthesis with a varying fine structure constant and non - standard expansion rate
We calculate primordial abundances of light elements produced during big bang nucleosynthesis when the fine structure constant and/or the cosmic expansion rate take non-standard values. We compare them with the recent values of observed D, He and Li abundances, which show slight inconsistency among themselves in the standard big bang nucleosynthesis scenario. This inconsistency is not solved by...
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We start with a brief account of the latest analysis of the Oklo phenomenon providing the still most stringent constraint on time-variability of the fine-structure constant α. Comparing this with the recent result from the measurement of distant QSO’s appears to indicate a non-uniform time-dependence, which we argue to be related to another recent finding of the accelerating universe. This view...
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Webb et al. [2] experimental results on the fine strucutre “constant ” variation with the age of the Universe, is here analized. By using the experimental data on the fine-structure “constant ”’s variation with the age of the Universe, and Dirac’s LNH (Large Number Hypothesis), we find how should vary the total number of nucleons in the Universe, the speed of light, Newton’s gravitational “cons...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2002
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.66.063507