Staggered versus overlap fermions: a study in the Schwinger model with $N_f=0,1,2$

Details Staggered versus overlap fermions: a study in the Schwinger model with $N_f=0,1,2$ Staggered versus overlap fermions: a study in the Schwinger model with $N_f=0,1,2$

2003-11-03

arxiv.org/abs/hep-lat/0311002v2

Phys.Rev.D69:034503,2004

Physics

High Energy Physics

High Energy Physics - Lattice

15 pages, 7 figures, v2: 1 ref corrected, minor changes

Scientific paper

10.1103/PhysRevD.69.034503

We study the scalar condensate and the topological susceptibility for a continuous range of quark masses in the Schwinger model with $N_f=0,1,2$ dynamical flavors, using both the overlap and the staggered discretization. At finite lattice spacing the differences between the two formulations become rather dramatic near the chiral limit, but they get severely reduced, at the coupling considered, after a few smearing steps.

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