concentration_universal_model: Code for Computing Peak Concentrations of Dark Matter Halos

This software provides Python routines for computing halo mass variance, formation-time proxies, and halo concentration predictions using the universal model described in the associated manuscript, "A Universal Fitting Formula for the Peak Concentration of Dark Matter Halos". The code supports multiple cosmologies, including CDM and warm dark matter cosmologies, multiple halo definitions, and peak, mean, and median concentration relations. It includes scripts for halo variance calculation, linear growth factor calculation, and end-to-end concentration prediction. This software release is associated with the manuscript "A Universal Fitting Formula for the Peak Concentration of Dark Matter Halos", currently under review by AAS Journals, manuscript number AAS72939.