Tensor-optimized few-body model for s-shell nuclei

TL;DR

This paper introduces a tensor-optimized few-body model (TOFM) that effectively captures tensor interactions in s-shell nuclei, closely matching results from rigorous calculations and improving understanding of nucleon-nucleon interactions.

Contribution

The paper develops a new tensor-optimized few-body model based on the TOSM approach, specifically tailored for s-shell nuclei, using bare nucleon-nucleon interactions.

Findings

TOFM accurately reproduces the energy and tensor interaction strength.

The model closely matches rigorous few-body calculation results.

It effectively accounts for tensor correlations in nuclei.

Abstract

As a new scheme of treating the tensor interaction of the nucleon-nucleon interaction, there is a proposal of a tensor-optimized shell-model (TOSM) for the study of medium and heavy nuclei. The TOSM includes the deuteron-like tensor correlation and provides quite a good reproduction of the binding energy and the size of $^4$He as compared with rigorous few body calculations. We propose a tensor-optimized few-body model (TOFM) using the spirit of the TOSM approximation in the few body framework with bare nucleon-nucleon interaction. We find that the TOFM can account for the strength of the tensor interaction very well and almost reproduces the full energy and various energy components as compared with rigorous few body calculations.