A unified approach to nuclei: The BPS Skyrme Model

TL;DR

This paper develops a BPS Skyrme model to effectively describe nuclear binding energies, achieving high accuracy for large nuclei and extending its application to thermodynamics and neutron star studies.

Contribution

It introduces a unified BPS Skyrme model that accurately predicts nuclear binding energies and explores its applications to thermodynamics and neutron stars.

Findings

Excellent agreement with experimental binding energies for large nuclei

Effective modeling of thermodynamic properties of nuclear matter

Insights into neutron star structure using the BPS Skyrme framework

Abstract

We present a concrete model of a low energy effective field theory of QCD, the well-known Skyrme Model. Specifically, we will work with the BPS submodel in order to describe the binding energies of nuclei. This BPS Skyrme model is characterized by having a saturated bound for the energy proportional to the baryon number of the nuclei. After presenting this classical result, we will proceed with a semi-classical quantization of the coordinates of spin and isospin. Then, with the further inclusion of the Coulomb interaction as well as a small explicit breaking of the isospin symmetry, we finally calculate the binding energies of nuclei, where an excellent agreement has been found for the nuclei with high baryon number. Besides this, we also apply this model to the study of some thermodynamic properties and to neutron stars.