Summing up the perturbation series in the Schwinger Model

TL;DR

This paper demonstrates how to sum the perturbation series for the electron propagator in the Schwinger Model by directly summing Feynman diagrams, confirming agreement with nonperturbative results.

Contribution

It introduces a direct summation method for the perturbation series in the Schwinger Model, bridging perturbative and nonperturbative approaches.

Findings

Perturbation series summed explicitly in the Schwinger Model.

Complete agreement found between perturbative and nonperturbative results.

Method confirms the validity of perturbative summation in this context.

Abstract

Perturbation series for the electron propagator in the Schwinger Model is summed up in a direct way by adding contributions coming from individual Feynman diagrams. The calculation shows the complete agreement between nonperturbative and perturbative approaches.