Staggered versus overlap fermions:: A study in the Schwinger model with Nf=0,1,2 -: art. no. 034503

被引：59
|
作者：
Dürr, S
Hoelbling, C
机构：
[1] DESY Zeuthen, D-15738 Zeuthen, Germany
[2] CNRS Marseille Luminy, Ctr Phys Theor, F-13288 Marseille 9, France
来源：
PHYSICAL REVIEW D | 2004年 / 69卷 / 03期
关键词：
D O I：
10.1103/PhysRevD.69.034503
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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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页数：8
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