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arXiv · hep-lat/9908012

Improved Overlap Fermions

W. Bietenholz·I. Hip
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Abstract

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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W. Bietenholz, I. Hip. 1999-08-12. Improved Overlap Fermions. https://doi.org/10.1016/s0920-5632(00)91749-3

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