Exact supersymmetry on the lattice: the Wess-Zumino model


The major obstacle in formulating a supersymmetric theory on the lattice arises from the fact that the supersymmetry algebra is actually an extension of the Poincaré algebra, which is explicitly broken by the lattice. Indeed, in an interacting theory, translation invariance is broken since the Leibniz rule is not valid for lattice derivatives [1]. We know… (More)