Cutoff effects in meson spectral functions

Abstract

We study the lattice spacing dependence of meson spectral functions calculated in quenched QCD with domain wall fermions as well as clover Wilson fermions in quenched and partially-quenched QCD. We conclude that for lattice spacing $a\le 3$ GeV all excited states appearing in the spectral functions are lattice artifacts.

Comments: Lattice 2004 (non-zero), 3 pages, 3 figures, uses espcrc2 package