https://doi.org/10.1140/epjc/s10052-024-12442-0
Regular Article - Theoretical Physics
PRyMordial: the first three minutes, within and beyond the standard model
1
Department of Physics and Astronomy, University of California, 92697, Irvine, CA, USA
2
C.N. Yang Institute for Theoretical Physics, Stony Brook University, 11794, Stony Brook, NY, USA
3
INFN Sezione di Roma, Piazzale Aldo Moro 2, 00185, Rome, Italy
Received:
22
October
2023
Accepted:
11
January
2024
Published online:
26
January
2024
In this work we present PRyMordial: A package dedicated to efficient computations of observables in the Early Universe with the focus on the cosmological era of Big Bang Nucleosynthesis (BBN). The code offers fast and precise evaluation of BBN light-element abundances together with the effective number of relativistic degrees of freedom, including non-instantaneous decoupling effects. PRyMordial is suitable for state-of-the-art analyses in the Standard Model as well as for general investigations into New Physics active during BBN. After reviewing the physics implemented in PRyMordial, we provide a short guide on how to use the code for applications in the Standard Model and beyond. The package is written in Python, but more advanced users can optionally take advantage of the open-source community for Julia. PRyMordial is publicly available on GitHub.
© The Author(s) 2024
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