Abstract
The formalism of the effective-potential method is first studied for the usual field theory and extended to the specific case of supersymmetric quantum electrodynamics. The superfields are shifted, as required by Weinberg's method for the evaluation of effective potentials, and superpropagators are derived with the method developed by Helay\"el-Neto for cases where supersymmetry is explicitly broken. The one- and two-loop corrections to the effective potential are calculated. These corrections are seen to be complex everywhere but at the minimum of the potential. The theory is then renormalized in a modified minimal-subtraction scheme and a finite expression is finally obtained for the effective potential.
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