Predicting the Lambda binding energy in nuclear matter

TL;DR

This paper predicts the Lambda hyperon's binding energy in nuclear matter using advanced meson-exchange potentials, comparing conventional and Dirac-influenced calculations to improve understanding of hyperon interactions.

Contribution

It introduces a novel application of the Juelich nucleon-nucleon potential to hyperon binding energy predictions, including Dirac effects for the first time.

Findings

Conventional Brueckner calculations yield specific binding energy values.

Including Dirac effects alters the predicted Lambda binding energy.

Discussion of issues in Dirac calculations with nucleon-hyperon potentials.

Abstract

The purpose of this note is to report predictions of the binding energy of the $\Lambda$ hyperon in nuclear matter using the latest version of the Juelich nucleon-nucleon meson-exchange potential. Results from a conventional Brueckner calculation are compared with previously reported values. A calculation including Dirac effects on the $\Lambda$ single-particle potential is also presented. Issues encountered in Dirac calculations with nucleon-hyperon potentials are discussed.