Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2000-12-13
Int.J.Mod.Phys. A16 (2001) 1811
Physics
High Energy Physics
High Energy Physics - Theory
14 pages, uses ws-p9-75x6-50.cls, presented at the 2nd Conference on the Exact RG, Rome 2000
Scientific paper
10.1142/S0217751X01004499
Exact Renormalization Group techniques are applied to supersymmetric models in order to get some insights into the low energy effective actions of such theories. Starting from the ultra-violet finite mass deformed N=4 supersymmetric Yang-Mills theory, one varies the regularising mass and compensates for it by introducing an effective Wilsonian action. (Polchinski's) Renormalization Group equation is modified in an essential way by the presence of rescaling (a.k.a. Konishi) anomaly, which is responsible for the beta-function. When supersymmetry is broken up to N=1 the form of effective actions in terms of massless fields is quite reasonable, while in the case of the N=2 model we appear to have problems related to instantons.
Arnone Stefano
Chiantese Stefano
Yoshida Koji
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