Instantons, higher-derivative terms, and nonrenormalization theorems in supersymmetric gauge theories

N. Dorey, V.V. Khoze, M.P. Mattis, M.J. Slater, W.A. Weir
1997 Physics Letters B  
We discuss the contribution of ADHM multi-instantons to the higher-derivative terms in the gradient expansion along the Coulomb branch of N=2 and N=4 supersymmetric SU(2) gauge theories. In particular, using simple scaling arguments, we confirm the Dine-Seiberg nonperturbative nonrenormalization theorems for the 4-derivative/8-fermion term in the two finite theories (N=4, and N=2 with N_F=4).
doi:10.1016/s0370-2693(97)00806-x fatcat:os4lkamnorfcfehx22bsexc2lq