Multistep shell model description of spin-aligned neutron-proton pair coupling: The formalism

TL;DR

This paper introduces an extension of the multistep shell model that includes neutron and proton degrees of freedom, providing a formalism for studying the structure of N=Z nuclear systems.

Contribution

The paper presents a formal extension of the multistep shell model to incorporate neutron-proton pairing, enhancing its applicability to N=Z nuclei.

Findings

Extended multistep shell model formalism for N=Z systems

Application to systems with four, six, and eight particles

Framework for future detailed applications

Abstract

The multistep shell model was extended recently to incorporate both neutron and proton degrees of freedom and applied to study the structure of $N=Z$ systems with four, six and eight particles [arXiv:1108.0269]. In this work we give a brief introduction to the formalism thus developed. A more detailed explanation with applications will be updated later.