$\Lambda$ hyperonic effect on the magnesium dripline

TL;DR

This study investigates how the addition of a $\Lambda$ hyperon influences the neutron dripline in magnesium isotopes using microscopic and relativistic models, revealing model-dependent extrapolations for hypernuclei.

Contribution

It compares three different models to analyze the $\Lambda$ hyperon's effect on magnesium dripline predictions, highlighting model dependence in extrapolations.

Findings

All models adequately describe known hypernuclei $\Lambda$ separation energies.

Extrapolated driplines for hypernuclei vary significantly between models.

Model dependence increases for moderately heavy hypernuclei.

Abstract

Neutron dripline calculations for both magnesium nuclei and magnesium + $\Lambda$ hypernuclei have been carried out in a microscopic framework using a chiral effective model. The results are compared with two other relativistic mean field models, SPL-40 and NL3. All three models describe the $\Lambda$ separation energy of known hypernuclei adequately. The extrapolation to the driplines for moderately heavy hypernuclei are found to be strongly model-dependent.