New approach to NN with perturbative pions

TL;DR

This paper introduces a novel effective field theory formulation for nucleon-nucleon interactions that treats pion interactions perturbatively while summing short-distance singularities to all orders, offering a different approach from existing methods.

Contribution

It presents a new EFT approach for NN interactions that differs from KSW by summing short-distance singularities to all orders.

Findings

Provides a new perturbative treatment of pion interactions in EFT.

Summation of short-distance singularities improves the theoretical framework.

Offers potential for more accurate modeling of NN interactions.

Abstract

The current status of effective field theory (EFT) descriptions of nucleon-nucleon (NN) interactions is briefly reviewed, and a new formulation of EFT which treats pion interactions perturbatively is presented. This approach differs from the Kaplan-Savage-Wise (KSW) expansion in that the singular short distance part of the pion tensor interaction is summed to all orders.