C. A. Bertulani, J. Fuqua, M. S. Hussein
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 q 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. A large deviation of the non-extensive parameter from q=1 (corresponding to Boltzmann statistics) does not seem to be compatible with observations.
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http://arxiv.org/abs/1205.4000
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