Spin-Flavor van der Waals Forces and NN interaction

TL;DR

This paper investigates the nucleon-nucleon interaction using a second-order perturbative approach including the elta resonance, revealing a van der Waals-like potential with implications for deuteron properties.

Contribution

It introduces a novel second-order perturbative calculation of NN interactions incorporating elta resonances, with a focus on renormalization of short-distance singularities.

Findings

Potential exhibits van der Waals-like singularity at short distances

Results provide insights into deuteron structure and interactions

Method aligns with chiral potential frameworks

Abstract

We study the Nucleon-Nucleon interaction in the Born-Oppenheimer approximation at second order in perturbation theory including the \Delta\ resonance as an intermediate state. The potential resembles strongly chiral potentials computed either via soliton models or chiral perturbation theory and has a van der Waals like singularity at short distances which is handled by means of renormalization techniques. Results for the deuteron are discussed.