Author/Authors :
Karen B. Eden، نويسنده , , P.S. Howe، نويسنده , , C. Schubert، نويسنده , , E. Sokatchev، نويسنده , , P.C. West، نويسنده ,
Abstract :
It is shown that certain extremal correlators in four-dimensional N=2 superconformal field theories (including N=4 super-Yang–Mills as a special case) have a free-field functional form. It is further argued that the coupling constant dependence receives no correction beyond the lowest order. These results hold for any finite value of Nc.
