ACROPOLIS: A generiC fRamework fOr Photodisintegration Of LIght elementS

TL;DR

ACROPOLIS is a versatile, modular framework designed to simulate photodisintegration processes affecting primordial light element abundances, enabling researchers to explore late-time high-energy injections in various beyond-standard-model scenarios.

Contribution

It introduces ACROPOLIS, the first flexible and extendable code for modeling light element disintegration after Big Bang nucleosynthesis, filling a crucial gap in existing computational tools.

Findings

ACROPOLIS can simulate decay and annihilation scenarios affecting light elements.

The framework is user-friendly and does not require prior coding knowledge.

It is easily extendable to other high-energy injection scenarios.

Abstract

The remarkable agreement between observations of the primordial light element abundances and the corresponding theoretical predictions within the standard cosmological history provides a powerful method to constrain physics beyond the standard model of particle physics (BSM). For a given BSM model these primordial element abundances are generally determined by (i) Big Bang Nucleosynthesis and (ii) possible subsequent disintegration processes. The latter potentially change the abundances due to late-time high-energy injections which may be present in these scenarios. While there are a number of public codes for the first part, no such code is currently available for the second. Here we close this gap and present ACROPOLIS, A generiC fRamework fOr Photodisintegration Of LIght elementS. The widely discussed cases of decays as well as annihilations can be run without prior coding knowledge within example programs. Furthermore, due to its modular structure, ACROPOLIS can easily be extended also to other scenarios.