Author/Authors :
Giuseppe Carlino، نويسنده , , Kenichi Konishi، نويسنده , , Nicola Maggiore، نويسنده , , Nicodemo Magnoli، نويسنده ,
Abstract :
We re-examine perturbative and nonperturbative aspects of the beta function in N=1 and N=2 supersymmetric gauge theories, make comments on the recent literature on the subject and discuss the exactness of several known results such as the NSVZ beta function.
