Istituto Nazionale di Fisica Nucleare


Università di Napoli Federico II

Public Algorithm Evaluating the Nucleosynthesis of Primordial Elements

PArthENoPE is a FORTRAN77 numerical code which computes the abundances of light nuclides produced during Big Bang Nucleosynthesis. Starting from nuclear statistical equilibrium conditions the program solves the set of corresponding coupled ordinary differential equations, follows the departure from chemical equilibrium of nuclear species, and determines their asymptotic abundances as function of several input cosmological parameters as the baryon density, the number of effective neutrino species, the value of cosmological constant and the neutrino chemical potential.

The most recent version is PArthENoPE 2.0 (October 22, 2018), which is being distributed after publication of the reference paper.

The new version of PArthENoPE, with the implementation of the recently calculated rate of the reaction D + p → γ + 3He (Nature 587 (2020) 210-213) and an improved GUI is going to be distributed in a few weeks.

Physics Description

User's Guides :
Comput.Phys.Commun. 233 (2018) 237-242, arXiv:1712.04378 [astro-ph.CO].
Comput. Phys. Commun. 178 (2008) 956-971, arXiv:0705.0290 [astro-ph].
PArthENoPE GUI User Manual.

How to get PArthENoPE

For more information, contact:
 Naples Astroparticle Group
   Dipartimento di Fisica "E. Pancini" and INFN Sezione di Napoli
   Complesso Universitario di Monte S.Angelo, Via Cintia
   I-80126, Napoli, Italy
   Tel.: +39-081-676914

Ofelia Pisanti