N=1* model and glueball superpotential from Renormalization-Group-improved perturbation theory

TL;DR

This paper introduces a method combining covariant SUSY Feynman graphs and RG-improved perturbation theory to compute non-perturbative low-energy properties of SUSY gauge theories, exemplified by the glueball superpotential in N=1 SU(2) SYM.

Contribution

It presents a novel approach for deriving the glueball superpotential directly from the microscopic Lagrangian using RG-improved perturbation theory.

Findings

Calculated the glueball superpotential of N=1 SU(2) SYM.

Obtained a potential of the Veneziano-Yankielowicz type.

Demonstrated the method's effectiveness for non-perturbative properties.

Abstract

A method for computing the low-energy non-perturbative properties of SUSY GFT, starting from the microscopic lagrangian model, is presented. The method relies on covariant SUSY Feynman graph techniques, adapted to low energy, and Renormalization-Group-improved perturbation theory. We apply the method to calculate the glueball superpotential in N=1 SU(2) SYM and obtain a potential of the Veneziano-Yankielowicz type.