出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We study the lattice model for the supersymmetric Yang-Mills theory in two dimensions proposed
by Cohen, Kaplan, Katz, and Unsal. We re-examine the formal proof for the absence of
susy breaking counter terms as well as the stability of the vacuum by an explicit perturbative calculation
for the case of U(2) gauge group. Introducing fermion masses and treating the bosonic
zero momentum mode nonperturbatively, we avoid the infra-red divergences in the perturbative
calculation. As a result, we find that there appear mass counter terms for finite volume which
vanish in the infinite volume limit so that the theory needs no fine-tuning.
