Axially-deformed solution of the Skyrme-Hartree-Fock-Bogoliubov equations using the transformed harmonic oscillator basis (IV) hfbtho (v4.0): A new version of the program

TL;DR

The paper introduces version 4.0 of the hfbtho code, enhancing nuclear structure calculations with symmetry restorations, new functional, improved Coulomb potential, and better maintainability.

Contribution

It presents significant updates to the hfbtho code, including symmetry restoration, new functional, and improved computational features, enabling more accurate and flexible nuclear modeling.

Findings

Implemented symmetry restoration without basis restrictions

Added SeaLL1 functional for nuclear interactions

Enhanced Coulomb potential calculation accuracy

Abstract

We describe the new version 4.0 of the code hfbtho that solves the nuclear Hartree-Fock-Bogoliubov problem by using the deformed harmonic oscillator basis in cylindrical coordinates. In the new version, we have implemented the restoration of rotational, particle number, and reflection symmetry. The restoration of rotational symmetry does not require using bases closed under rotation. Furthermore, the SeaLL1 functional was added and the calculation of the Coulomb potential was improved. Finally, the code has been refactored to facilitate maintenance and future developments.