Conformal manifolds and 3d mirrors of (Dn, Dm) theories

The Argyres-Douglas (AD) theories of type $(D_n,D_m)$, realized by IIB geometrical engineering on a single hypersurface singularity, are studied. We analyze their conformal manifolds and propose the 3d mirror all in this class upon reduction circle. A subclass AD question that admits marginal couplings is found to be $\mathrm{SO}$ or $\mathrm{USp}$ gaugings certain $D_p(\mathrm{SO}(2N))$ $D_p(\mathrm{USp}(2N))$ theories. For such theories, we develop method derive weakly-coupled description from Newton polygon associated singularity. further find presence crepant resolutions geometry reflected (non-abelian) symplectic-type gauge node quiver theory. other important results include mirrors as well properties admit Lagrangian descriptions.