Argyres-Douglas matter and S-duality: Part II

Understand

We study S-duality of Argyres-Douglas theories obtained by compactification of 6d (2,0) theories of ADE type on a sphere with irregular punctures.

• The weakly coupled descriptions are given by the degeneration limit of auxiliary Riemann sphere with marked points, among which three punctured sphere represents isolated superconformal theories.
• We also discuss twisted irregular punctures and their S-duality.