Effective Action of N=2 Supersymmetric Field Theories in Harmonic Superspace Approach

TL;DR

This paper reviews the harmonic superspace approach to calculating the effective action in N=2 super Yang-Mills theories, highlighting the formulation, background field method, and structure of the effective action.

Contribution

It provides a comprehensive overview of the harmonic superspace formulation and methods for computing effective actions in N=2 supersymmetric gauge theories.

Findings

Holomorphic and non-holomorphic contributions can be calculated within this framework.

The structure of the effective action in harmonic superspace is elucidated.

The background field method is effectively applied to N=2 super Yang-Mills theory.

Abstract

The paper is a brief review of the works devoted to problem of effective action in N=2 super Yang-Mills theories in harmonic superspace approach. The formulation of N=2 superfield models in harmonic superspace is discussed, background field method for N=2 super Yang-Mills theory is constructed and general structure of effective action in harmonic superspace is investigated. It is shown how the holomorphic and non-holomorphic contributions to effective action can be calculated within the harmonic superspace approach.