Wilson loops in 5d $\mathcal{N}=1$ theories and S-duality

Understand

We study the action of S-duality on half-BPS Wilson loop operators in 5d $\mathcal{N}=1$ theories.

• The duality is the statement that different massive deformations of a single 5d SCFT are described by different gauge theories, or equivalently that the SCFT points in parameter space of two gauge theories coincide.
• The pairs of dual theories that we study are realized by brane webs in type IIB string theory that are S-dual to each other.
• We focus on $SU(2)$ SQCD theories with $N_f \le 4$ flavors, which are self-dual, and on $SU(3)$ SQCD theories, which are dual to $SU(2)^2$ quiver theories.