Volution of nuclear spin-orbit splittings with Skyrme functional SAMi-T

TL;DR

This paper introduces a new Skyrme functional with a tensor term, guided by ab initio RBHF calculations, improving the description of nuclear properties and the evolution of spin-orbit splittings.

Contribution

The paper develops a novel Skyrme functional incorporating tensor terms based on RBHF studies, avoiding ambiguities from experimental data.

Findings

Accurately describes nuclear ground-state properties

Improves modeling of giant resonances

Enhances understanding of spin-orbit splitting evolution

Abstract

A new Skyrme functional has been developed with tensor term guided by ab initio relativistic Brueckner-Hartree-Fock (RBHF) studies on neutron-proton drops. Instead of extracting information on the tensor force from experimental single-particle energy splittings, the RBHF calculations do not contain beyond mean-field effects such as particle-vibration coupling and therefore the information on the tensor force can be obtained without ambiguities. The new functional gives a good description of nuclear ground-state properties as well as various giant resonances. The description for the evolution of single-particle energy splittings is also improved by the new functional.