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arXiv · hep-lat/9810014

The Schwinger Model with Perfect Staggered Fermions

W. Bietenholz·H. Dilger
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Abstract

We construct a new perfect action for free staggered fermions, which is more local than the one obtained from the standard block average scheme. This pays off in superior properties after a short ranged truncation. This action is ``gauged by hand'' and tested in Schwinger model simulations by means of a new variant of hybrid MC. Using ``fat links'' for the gauge field, we obtain a tiny ``pion'' mass down to β\approx 1.5, and the ``eta'' mass follows very closely the prediction of asymptotic scaling.

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W. Bietenholz, H. Dilger. 1998-10-05. The Schwinger Model with Perfect Staggered Fermions. https://doi.org/10.1016/s0920-5632(99)85249-9

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