Fully microscopic shell-model calculations with realistic effective hamiltonians

TL;DR

This paper demonstrates fully microscopic shell-model calculations using realistic effective Hamiltonians derived from chiral potentials and V-low-k renormalization, accurately describing nuclear structure without phenomenological inputs.

Contribution

It introduces a fully microscopic approach to shell-model calculations that derives all inputs theoretically, eliminating phenomenological parameters.

Findings

Realistic Hamiltonians accurately reproduce nuclear properties.

Method applies across different nuclear mass regions.

No phenomenological adjustments needed.

Abstract

The advent of nucleon-nucleon potentials derived from chiral perturbation theory, as well as the so-called V-low-k approach to the renormalization of the strong short-range repulsion contained in the potentials, have brought renewed interest in realistic shell-model calculations. Here we focus on calculations where a fully microscopic approach is adopted. No phenomenological input is needed in these calculations, because single-particle energies, matrix elements of the two-body interaction, and matrix elements of the electromagnetic multipole operators are derived theoretically. This has been done within the framework of the time-dependent degenerate linked-diagram perturbation theory. We present results for some nuclei in different mass regions. These evidence the ability of realistic effective hamiltonians to provide an accurate description of nuclear structure properties.