A new three-ranged Gogny interaction in touch with pion exchange

TL;DR

This paper introduces a new three-range Gogny interaction model, grounded in physical principles and pion exchange, which improves the description of nuclear and astrophysical matter properties.

Contribution

It develops a novel Gogny-type interaction with three Gaussian ranges, fixed by physical arguments and pion exchange, enhancing nuclear and infinite matter property predictions.

Findings

Improved description of atomic nuclei properties.

Enhanced infinite matter property predictions relevant for astrophysics.

Interaction parameters fixed from physical grounds and pion exchange.

Abstract

We present a new Gogny-type finite-range effective interaction including a third Gaussian in the central term. Based on simple arguments valid for an arbitrary radial form factor, the three ranges are fixed from physical grounds, relating them to one-boson exchange interactions. Moreover, some parameters of the longest range are fixed through the G-matrix elements of the One Pion Exchange Potential. On top of giving a fairly good description of atomic nuclei properties, the resulting interaction leads to a remarkable improvement of some infinite matter properties that are relevant for astrophysical calculations.