Magnetic quivers and line defects — On a duality between 3d $$ \mathcal{N} $$ = 4 unitary and orthosymplectic quivers

Supersymmetric Sp(k) quantum chromodynamics with 8 supercharges in space-time dimensions 3 to 6 can be realised by two different Type II brane configurations the presence of orientifolds. Consequently, types magnetic quivers describe Higgs branch SQCD theory. This is a salient example general phenomenon: given hyper-Kahler may admit several quiver constructions. It then natural wonder if these quivers, which are described 3d N=4 theories, dual theories. In this work, unitary and orthosymplectic theories subjected variety tests, providing evidence that they IR each other. For this, sphere partition function supersymmetric indices compared. Also, we study half BPS line defects find interesting regularities from viewpoints exact results, configurations, one-form symmetry.