Hyperon-nucleon single-particle potentials with low-momentum interactions

TL;DR

This paper calculates hyperon-nucleon single-particle potentials using low-momentum interactions within the Hartree-Fock approximation, highlighting the variability due to scarce experimental data and comparing different theoretical models.

Contribution

It provides a comparative analysis of hyperon-nucleon potentials derived from various models using low-momentum interactions, addressing uncertainties in the field.

Findings

Single-particle potentials vary significantly across models.

Comparison between OBE models and chiral EFT shows differences.

Scarcity of experimental data limits potential predictions.

Abstract

Single-particle potentials in Hartree-Fock approximation for different hyperon-nucleon (YN) channels are calculated in the framework of the effective low-momentum YN interaction V_lowk. In contrast to the nucleon-nucleon interaction, the available experimental data for the YN interaction are scarce. As a consequence no unique YN low-momentum potential V_lowk can be predicted from the various bare potentials. The resulting momentum- and density-dependent single-particle potentials for several different bare OBE models and for chiral effective field theory are compared to each other.