Domain walls in supersymmetric QCD: from weak to strong coupling

TL;DR

This paper constructs and analyzes BPS domain walls in supersymmetric QCD with fewer flavors than colors, exploring their properties across different coupling regimes and their implications for supersymmetric gluodynamics.

Contribution

It explicitly constructs BPS domain walls in supersymmetric QCD with 2 Nf < Nc and examines their behavior from weak to strong coupling regimes.

Findings

Domain walls are BPS saturated for any matter mass.

Large mass limit of domain walls is evaluated.

Relevance to supersymmetric gluodynamics is discussed.

Abstract

We consider domain walls that appear in supersymmetric QCD with Nf < Nc massive flavours. In particular, for 2 Nf < Nc we explicitly construct the domain walls that interpolate between vacua labeled by i and (i+ N_f). We show that these solutions are Bogomol'nyi-Prasad-Sommerfield (BPS) saturated for any value of the mass of the matter fields. This fact allows us to evaluate the large mass limit of these domain walls. We comment on the relevance of these solutions for supersymmetric gluodynamics.