Big Bang nucleosynthesis with a non-Maxwellian distribution
Nuclear Theory
2015-06-05 v2 Cosmology and Nongalactic Astrophysics
Solar and Stellar Astrophysics
Abstract
The abundances of light elements based on the big bang nucleosynthesis model are calculated using the Tsallis non-extensive statistics. The impact of the variation of the non-extensive parameter from the unity value is compared to observations and to the abundance yields from the standard big bang model. We find large differences between the reaction rates and the abundance of light elements calculated with the extensive and the non-extensive statistics. We found that the observations are consistent with a non-extensive parameter q = 1 + 0.05 - 0.12, indicating that a large deviation from the Boltzmann-Gibbs statistics (q = 1) is highly unlikely.
Keywords
Cite
@article{arxiv.1205.4000,
title = {Big Bang nucleosynthesis with a non-Maxwellian distribution},
author = {C. A. Bertulani and J. Fuqua and M. S. Hussein},
journal= {arXiv preprint arXiv:1205.4000},
year = {2015}
}
Comments
12 pages, 13 figures, to be published in the Astrophysical Journal