PRIMAT is a Mathematica code dedicated to the computation
of light elements abundances at the end of the Big-Bang
Nucleosynthesis (BBN). It computes the evolution of these
abundances in the first minutes after the Big-Bang so as to obtain
the frozen values when the temperature dropped below 108
degrees. It allows to explore the dependence of light elements
abundances on cosmological parameters, such as baryon density or
number of neutrino species, but also to estimate from a Monte-Carlo
method the uncertainty in these predictions due to uncertainties in nuclear reaction rates.
The details of the method used to solve numerically for the
thermodynamics, cosmology and nuclear reactions in the early
universe are available in an associated
publication (Physics Reports, 04, (2018) 005 [arXiv:1801.08023]).
Please cite it along with this website if you use it in BBN related publications, using this
The programs in this page are distributed as free software under the GNU General Public License. They are distributed in the hope that they will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU GPL for more details.
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