A string theory realization of special unitary quivers in 3 dimensions

We propose a string theory realization of three-dimensional N = 4 quiver gauge theories with special unitary gauge groups. This is most easily understood in type IIA string theory with D4-branes wrapped on holomorphic curves in local K3's, by invoking the Stuckelberg mechanism. From the type IIB perspective, this is understood as simply compactifying the familiar Hanany-Witten (HW) constructions on a T-3. The mirror symmetry duals are easily derived. We illustrate this with various examples of mirror pairs.