On introducing Charge-Symmetry-Breaking terms to nuclear Energy Density Functionals

TL;DR

This paper explores two methods to incorporate charge-symmetry-breaking effects into nuclear energy density functionals, enhancing the understanding of nucleon interactions by integrating effective theory and meson mixing effects.

Contribution

It introduces novel approaches to include charge-symmetry-breaking terms into Skyrme and Quark-Meson-Coupling EDFs, based on effective theory and meson mixing.

Findings

CSB terms from effective theory and meson mixing are incorporated into EDFs.

The methods provide a new way to account for charge-symmetry-breaking effects.

Potential improvements in nuclear structure calculations are suggested.

Abstract

The Charge-Symmetry-Breaking (CSB) character of the nucleon-nucleon interaction is well established. This work presents two different ways of introducing such effects into a nuclear Energy Density Functional (EDF). CSB terms are either coming from the effective theory expansion or are derived from electromagnetic mixing of $\rho^0$ and $\omega$ mesons. These terms are then introduced to Skyrme and Quark-Meson-Coupling EDFs, respectively.