The Non-perturbative term of the Pseudovector Interaction in the Pion-Nucleon System and the Pion Form Factor

TL;DR

This paper investigates the non-perturbative effects of pseudovector interactions on the pion form factor and photon-pion-pion vertex within the pion-nucleon system using field theoretical methods.

Contribution

It introduces a non-perturbative term in pseudovector coupling to analyze its impact on the photon-pion-pion vertex and pion form factor.

Findings

Non-perturbative term significantly affects the self-energy.

Field theoretical calculations reveal modifications to the vertex functions.

Results enhance understanding of pion-nucleon interactions.

Abstract

The correction of the higher-order process for the photon-pion-pion vertex is calculated by the field theoretical method of the pion-nucleon system. The non-perturbative term of the pseudovector coupling interaction is included to examine the effect of the self-energy.