Dimensional reduction regularization breaks supersymmetry in specific superfield theories.
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Peer-reviewed literature establishes that regularization by dimensional reduction breaks supersymmetry in specific supersymmetric Yang-Mills theories and is not entirely self-consistent.
Most calculations of quantum corrections in supersymmetric theories are made with the dimensional reduction, which is a modification of the dimensional regularization. However, it is well known that the dimensional reduction is not self-consistent. A consistent regularization, which does not break the supersymmetry, is the higher covariant derivative regularization. However, the integrals obtained with this regularization can not be usually calculated analytically. We discuss application of this regularization to the calculations in supersymmetric theories. In particular, it is demonstrated that integrals defining the β-function are possibly integrals of total derivatives. This feature allows to explain the origin of the exact NSVZ β-function, relating the β-function with the anomalous dimensions of the matter superfields. However, integrals for the anomalous dimension should be calculated numerically.
By a direct calculation it is shown that at the three-loop level the regularization by dimensional reduction of Avdeev, Chochia and Vladimirov breaks supersymmetry relations between couplings in the N = 1, 2, 4 supersymmetric Yang-Mills theories written in terms of component fields. This is a strong limitation to the scope of the regularization.
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