PERFECT LATTICE ACTIONS FOR THE GROSS-NEVEU MODEL AT LARGE-N

被引：20
|
作者：
BIETENHOLZ, W
FOCHT, E
WIESE, UJ
机构：
[1] MIT, DEPT PHYS, CAMBRIDGE, MA 02139 USA
[2] HLRZ, THEORIE ELEMENTARTELICHEN GRP, D-52425 JULICH, GERMANY
来源：
NUCLEAR PHYSICS B | 1995年 / 436卷 / 1-2期
关键词：
D O I：
10.1016/0550-3213(94)00516-H
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：
Fixed point actions for free and interacting staggered lattice fermions are constructed by iterating renormalization group transformations. At large N the fixed point action for the Gross-Neveu model is a perfect action in the sense of Hasenfratz and Niedermayer, i,e, cut-off effects are completely eliminated. Tn particular, the fermionic 1-particle energy spectrum of the lattice theory is identical with the one of the continuum even for arbitrarily small correlation lengths. The cut-off effects of the chiral condensate are eliminated using a perfect operator.
引用
收藏
页码：385 / 413
页数：29
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