Nuclear structure calculations in $^{20}$Ne with No-Core Configuration-Interaction model

TL;DR

This paper applies a novel No-Core Configuration-Interaction model to calculate negative parity states in $^{20}$Ne and beta-decay Gamow-Teller strength in $^{20}$Na, providing new insights into nuclear structure.

Contribution

It introduces the first-ever calculations of these states and decay properties using the No-Core Configuration-Interaction approach based on multi-reference density functional theory.

Findings

First calculations of negative parity states in $^{20}$Ne

Gamow-Teller strength distribution for $^{20}$Na beta-decay

Discussion of method's advantages and shortcomings

Abstract

Negative parity states in $^{20}$Ne and Gamow-Teller strength distribution for the ground-state beta-decay of $^{20}$Na are calculated for the very first time using recently developed No-Core Configuration-Interaction model. The approach is based on multi-reference density functional theory involving isospin and angular-momentum projections. Advantages and shortcomings of the method are briefly discussed.