EFTCAMB/EFTCosmoMC: Numerical Notes v3.0

TL;DR

EFTCAMB/EFTCosmoMC are publicly available computational tools implementing the effective field theory approach for dark energy and modified gravity, with detailed technical documentation and equations provided for accurate numerical modeling.

Contribution

This paper provides comprehensive technical notes and equations for the EFTCAMB/EFTCosmoMC codes, enhancing transparency and reproducibility in EFT-based cosmological modeling.

Findings

Complete set of modified equations included

Guidance for numerical implementation provided

Code updates will be documented in future notes

Abstract

EFTCAMB/EFTCosmoMC are publicly available patches to the CAMB/CosmoMC codes implementing the effective field theory approach to single scalar field dark energy and modified gravity models. With the present numerical notes we provide a guide to the technical details of the code. Moreover we reproduce, as they appear in the code, the complete set of the modified equations and the expressions for all the other relevant quantities used to construct these patches. We submit these notes to the arXiv to grant full and permanent access to this material which provides very useful guidance to the numerical implementation of the EFT framework. We will update this set of notes when relevant modifications to the EFTCAMB/EFTCosmoMC codes will be released. The present version is based on the version of EFTCAMB/EFTCosmoMC Sep17.