Improved Overlap Fermions

Details Improved Overlap Fermions Improved Overlap Fermions

1999-08-12

arxiv.org/abs/hep-lat/9908012v1

Nucl.Phys.Proc.Suppl. 83 (2000) 600-602

Physics

High Energy Physics

High Energy Physics - Lattice

Talk presented at LATTICE99(chiral fermions), 3 pages, 6 figures

Scientific paper

We test exact and approximate Ginsparg-Wilson fermions with respect to their chiral and scaling behavior in the 2-flavor Schwinger model. We first consider explicit approximate GW fermions in a short range, then we proceed to their chiral correction by means of the ``overlap formula'', and finally we discuss a numerically efficient perturbative chiral correction. In this way we combine very good chiral and scaling properties with a relatively modest computational effort.

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