Abstract
We extend a previously formulated instanton superfield method from SU(2) to SU( N) gauge theories without classical vacuum expectation values of scalar fields. We consider supersymmetric Yang-Mills, supersymmetric QCD, and a class of chiral theories with matter in the fundamental and antisymmetric tensor representation. Via cluster decomposition, our results provide non-trivial consistency checks; in particular they enable us to conclude that for most of the chiral theories the approach without classical scalar VEV's is inconsistent.
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