Recent breakthroughs in Skyrme-Hartree-Fock-Bogoliubov mass formulas

TL;DR

This paper reviews recent advances in Skyrme-Hartree-Fock-Bogoliubov mass models, achieving unprecedented accuracy in nuclear mass predictions and improving the understanding of neutron-rich nuclei and astrophysical phenomena.

Contribution

The authors developed a new HFB mass model with a more realistic pairing treatment, significantly reducing the rms deviation on measured nuclear masses.

Findings

Achieved a rms deviation of 0.581 MeV on 2149 nuclear masses.

Developed a force suitable for neutron-rich nuclei and astrophysical environments.

Enhanced the predictive power for supernova and neutron-star studies.

Abstract

We review our recent achievements in the construction of microscopic mass tables based on the Hartree-Fock-Bogoliubov method with Skyrme effective interactions. In the latest of our series of HFB-mass models, we have obtained our best fit ever to essentially all the available mass data, by treating the pairing more realistically than in any of our earlier models. The rms deviation on the 2149 measured masses of nuclei with N and Z>8 has been reduced for the first time in a mean field approach to 0.581 MeV. With the additional constraint on the neutron-matter equation of state, this new force is thus very well-suited for the study of neutron-rich nuclei and for the description of astrophysical environments like supernova cores and neutron-star crusts.