Baryon Interactions from Lattice QCD

TL;DR

This paper presents a lattice QCD approach to derive baryon-baryon interactions, successfully extracting nucleon-nucleon and hyperon-nucleon potentials, including tensor and central components, in both quenched and full QCD simulations.

Contribution

It introduces a novel lattice QCD method to compute baryon-baryon potentials, extending to tensor and hyperon interactions, with results aligning qualitatively with known potentials.

Findings

Successfully extracted nucleon-nucleon potentials in quenched QCD.

Extended method to obtain tensor and hyperon-nucleon potentials.

Reproduced qualitative features of modern nucleon-nucleon potentials.

Abstract

We report on new attempt to investigate baryon-baryon interactions in lattice QCD. From the Bethe-Salpeter (BS) wave function, we have successfully extracted the nucleon-nucleon ($NN$) potentials in quenched QCD simulations, which reproduce qualitative features of modern $NN$ potentials. The method has been extended to obtain the tensor potential as well as the central potential and also applied to the hyperon-nucleon ($YN$) interactions, in both quenched and full QCD.