Non-perturbative SQCD Superpotentials from String Instantons
  The Affleck-Dine-Seiberg instanton generated superpotential for SQCD with Nf=Nc-1 flavours is explicitly derived from a local model of engineered intersecting D6-branes with a single E2-instanton. This computation extends also to symplectic gauge groups with Nf=Nc flavours. 
Nikolas Akerblom, Ralph Blumenhagen, Dieter Lust, Erik Plauschinn,   Maximilian Schmidt-Sommerfeld