Many-body perturbation theories for finite nuclei

TL;DR

This paper reviews the recent resurgence of many-body perturbation theory in nuclear physics, demonstrating its effectiveness as an efficient tool for studying medium-mass nuclei and benchmarking new nuclear Hamiltonians.

Contribution

It provides a comprehensive overview of the current status and novel results of many-body perturbation theory in nuclear structure, highlighting its accuracy and efficiency.

Findings

Perturbation theory effectively describes medium-mass nuclei.

New chiral nuclear Hamiltonians are benchmarked with multiple perturbation methods.

Perturbation approaches serve as valuable pre-processing tools for complex nuclear calculations.

Abstract

In recent years many-body perturbation theory encountered a renaissance in the field of ab initio nuclear structure theory. In various applications it was shown that perturbation theory, including novel flavors of it, constitutes a useful tool to describe atomic nuclei, either as a full-fledged many-body approach or as an auxiliary method to support more sophisticated non-perturbative many-body schemes. In this work the current status of many-body perturbation theory in the field of nuclear structure is discussed and novel results are provided that highlight its power as a efficient and yet accurate (pre-processing) approach to systematically investigate medium-mass nuclei. Eventually a new generation of chiral nuclear Hamiltonians is benchmarked using several state-of-the-art flavours of many-body perturbation theory.