Study of spin polarized nuclear matter and finite nuclei with finite range simple effective interaction

TL;DR

This paper revisits a finite range simple effective interaction to study spin polarized nuclear matter and finite nuclei, improving parameter determination for more accurate and consistent predictions of nuclear properties and magnetic transitions.

Contribution

It refines the parameter set of the effective interaction to better predict spin polarized nuclear matter and finite nuclei, incorporating effective mass splitting constraints.

Findings

Enhanced parameter determination improves prediction accuracy.

Identification of conditions for ferromagnetic and antiferromagnetic transitions.

Analytical insights into the role of interaction parameters.

Abstract

The properties of spin polarized pure neutron matter and symmetric nuclear matter are studied using the finite range simple effective interaction, upon its parametrization revisited. Out of the total twelve parameters involved, we now determine ten of them from nuclear matter, against the nine parameters in our earlier calculation, as required in order to have predictions in both spin polarized nuclear matter and finite nuclei in unique manner being free from uncertainty found using the earlier parametrization. The information on the effective mass splitting in polarized neutron matter of the microscopic calculations is used to constrain the one more parameter, that was earlier determined from finite nucleus, and in doing so the quality of the description of finite nuclei is not compromised. The interaction with the new set of parameters is used to study the possibilities of ferromagnetic and antiferromagnetic transitions in completely polarized symmetric nuclear matter. Emphasis is given to analyze the results analytically, as far as possible, to elucidate the role of the interaction parameters involved in the predictions.