Emergence of rotational bands in ab initio no-core configuration interaction calculations of the Be isotopes

TL;DR

This paper demonstrates the emergence of rotational bands in Be isotopes through ab initio no-core configuration interaction calculations, revealing well-developed rotational structures in nuclear spectra using realistic interactions.

Contribution

It shows for the first time that rotational bands can be observed in NCCI calculations for Be isotopes with realistic nucleon-nucleon interactions.

Findings

Rotational patterns observed in excitation energies, electromagnetic moments, and transitions.

Yrast and low-lying excited bands identified.

Rotational structures are well-developed in the calculations.

Abstract

The emergence of rotational bands is observed in no-core configuration interaction (NCCI) calculations for the Be isotopes (7<=A<=12), as evidenced by rotational patterns for excitation energies, electromagnetic moments, and electromagnetic transitions. Yrast and low-lying excited bands are found. The results indicate well-developed rotational structure in NCCI calculations, using the JISP16 realistic nucleon-nucleon interaction within finite, computationally-accessible configuration spaces.