The Schwinger model with perfect staggered fermions

被引：1
|
作者：
Bietenholz, W
Dilger, H
机构：
[1] Forschungszentrum Julich, HLRZ, D-52435 Julich, Germany
[2] WWU Munster, Inst Theoret Phys 1, D-48149 Munster, Germany
来源：
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 1999年 / 73卷
关键词：
D O I：
10.1016/S0920-5632(99)85249-9
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
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 beta less than or similar to 1.5, and the "eta" mass follows very: closely the prediction of asymptotic scaling.
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页码：933 / 935
页数：3
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