Universality check of the overlap fermions in the Schroedinger functional

Abstract

I examine some properties of the overlap operator in the Schroedinger functional formulated by Luescher at perturbative level. By investigating spectra of the free operator and one-loop coefficient of the Schroedinger functional coupling, I confirm the universality at tree and one-loop level. Furthermore, I address cutoff effects of the step scaling function and it turns out that the lattice artifacts for the overlap operator are comparable with those of the clover actions.

Comments: 7 pages, 3 figures, talk given at the XXVI International Symposium on Lattice Field Theory, July 14-19 Williamsburg, Virginia, USA