A construction of N = 2 and centerless N = 4 superconformal fields via affine superalgebras Original Research Article

In this paper we give a new construction of the N = 2 superconformal algebra using currents of the affine superalgebra ŝl(2|1) and free bosonic fields, and also the N = 4 supercomformal algebra without central charge in terms of currents of ŝl(2|2) and free bosonic fields.