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

TL;DR

This paper investigates the spin-aligned neutron-proton pair coupling scheme using a multistep shell model to understand its role alongside other configurations in N=Z nuclei below $^{100}$Sn.

Contribution

It introduces a multistep shell model approach to analyze spin-aligned neutron-proton pairing and its interaction with other nuclear configurations.

Findings

Identifies the role of spin-aligned neutron-proton pairs in N=Z nuclei.

Analyzes the interplay between pairing and other configurations.

Applies the model to nuclei with 4, 6, and 8 holes below $^{100}$Sn.

Abstract

The recently proposed spin-aligned neutron-proton pair coupling scheme is studied within a non-orthogonal basis in term of the multistep shell model. This allows us to identify simultaneously the roles played by other configurations such as the normal pairing term. The model is applied to four-, six- and eight-hole $N=Z$ nuclei below the core $^{100}$Sn.