Description of nuclear systems with a self-consistent configuration-mixing approach. I: Theory, algorithm, and application to the $^{12}$C test nucleus

Understand

Although self-consistent multi-configuration methods have been used for decades to address the description of atomic and molecular many-body systems, only a few trials have been made in the context of nuclear structure.

• This work aims at the development of such an approach to describe in a unified way various types of correlations in nuclei, in a self-consistent manner where the mean-field is improved as correlations are introduced.
• The goal is to reconcile the usually set apart Shell-Model and Self-Consistent Mean-Field methods.
• This approach is referred as "variational multiparticle-multihole configuration mixing method".