Homological S-Duality in 4d N=2 QFTs

Matteo Caorsi, Sergio Cecotti

The $S$-duality group $\mathbb{S}(\mathcal{F})$ of a 4d $\mathcal{N}=2$ supersymmetric theory $\mathcal{F}$ is identified with the group of triangle auto-equivalences of its cluste…