Extremal and next-to-extremal n-point correlators in four-dimensional SCFT
arXiv:hep-th/0004102 · doi:10.1016/S0370-2693(00)01181-3
Abstract
It is shown that certain extremal and next-to-extremal n-point correlators in four-dimensional N=2 superconformal field theories are free. These results hold for any gauge group.
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