Infinitely many N=2 SCFT with ADE flavor symmetry

We present evidence that for each ADE Lie group G there is an infinite tower of 4D N = 2 SCFTs, which we label as D(G, s) with s ∈ N, having (at least) flavor symmetry G. For G = SU(2), D(SU(2),s) coincides with the Argyres-Douglas model of type D8+1, while for larger flavor groups the models are new (but for a few previously known examples). When its flavor symmetry G is gauged, D(G,s) contributes to the Yang-Mills beta-function as 8/2(+1) adjoint hypermultiplets. The argument is based on a combination of Type IIB geometric engineering and the categorical deconstruction of arXiv: 1203.6743. One first engineers a class of N = 2 models which, trough the analysis of their category of quiver representations, are identified as asymptotically-free gauge theories with gauge group G coupled to some conformal matter system. Taking the limit gYM → 0 one isolates the matter SCFT which is our D(G, s). © SISSA 2013.