Large N Strong Coupling Dynamics in Non-Supersymmetric Orbifold Field   Theories
  We give a recipe relating holomorphic quantities in supersymmetric field theory to their descendants in non-supersymmetric Z_2 orbifold field theories. This recipe, consistent with a recent proposal of Strassler, gives exact results for bifermion condensates, domain wall tensions and gauge coupling constants in the planar limit of the orbifold theories. 
Robbert Dijkgraaf, Andrew Neitzke and Cumrun Vafa