Renormalization of NN Interaction with Relativistic Chiral Two Pion Exchange

TL;DR

This paper investigates the renormalization of nucleon-nucleon interactions using relativistic chiral two-pion exchange, showing reduced counter-terms and good agreement with experimental data.

Contribution

It introduces a relativistic approach to chiral two-pion exchange that simplifies renormalization by reducing counter-terms compared to heavy-baryon methods.

Findings

Short distance singularity reduces counter-terms by about half.

Phase shifts and deuteron properties agree well with experimental data.

Relativistic approach improves renormalization efficiency.

Abstract

The renormalization of the NN interaction with the Chiral Two Pion Exchange Potential computed using relativistic baryon chiral perturbation theory is considered. The short distance singularity reduces the number of counter-terms to about a half as those in the heavy-baryon expansion. Phase shifts and deuteron properties are evaluated and a general overall agreement is observed.