Collectivity-induced quenching of signatures for shell closures

TL;DR

This paper investigates how collectivity effects, such as deformation and fluctuations, influence the mass differences used as signatures for nuclear shell closures, employing advanced theoretical methods.

Contribution

It introduces a detailed analysis of mass difference modifications due to collectivity using the angular-momentum projected Generator Coordinate Method with the Skyrme SLy4 interaction.

Findings

Mass differences are significantly affected by static deformation.

Dynamic fluctuations alter the shell closure signatures.

The method provides refined insights into nuclear shell structure.

Abstract

Mass differences are an often used as signature and measure for shell closure. Using the angular-momentum projected Generator Coordinate Method and the Skyrme interaction SLy4, we analyze the modification of mass differences due to static deformation and dynamic fluctuations around the mean-field ground state.