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From Regular to Irregular: A Unified Origin for Argyres-Douglas Theories
Simone Giacomelli, William Harding, Noppadol Mekareeya, Alessandro Mininno
https://arxiv.org/abs/2507.13434

From Regular to Irregular: A Unified Origin for Argyres-Douglas Theories
We propose that Argyres-Douglas theories of type $D_p(\mathrm{SU}(N))$ and $(A_{p-1}, A_{N-1})$ - both realizable as Type A class $\mathcal{S}$ theories with irregular punctures - can be obtained via a sequence of mass deformations from a common ancestor: a class $\mathcal{S}$ theory with only regular punctures. Building on our previous work, this result establishes that these theories ultimately originate from 6d $\mathcal{N}=(1,0)$ orbi-instanton theories compactified on a torus. The requisit…