Wilson, fixed point and Neuberger's lattice Dirac operator for the Schwinger model

被引：22

作者：

Farchioni, F ^{[1
]}

Hip, I ^{[1
]}

Lang, CB ^{[1
]}

机构：

[1] Graz Univ, Inst Theoret Phys, A-8010 Graz, Austria

来源：

PHYSICS LETTERS B | 1998年 / 443卷 / 1-4期

基金：

奥地利科学基金会;

关键词：

lattice field theory; fixed point action; overlap operator; Dirac operator spectrum; zero-modes; topological charge; Schwinger mode;

D O I：

10.1016/S0370-2693(98)01343-4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We perform a comparison between different lattice regularizations of the Dirac operator for massless fermions in the framework of the single and two flavor Schwinger model. We consider a the Wilson-Dirae operator at the critical value of the hopping parameter: b) Neuberger's overlap operator: c) the fixed point operator. We test chiral properties of the spectrum. dispersion relations and rotational invariance of the mesonic bound state propagators. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：214 / 220

页数：7

共 31 条

[1] CHIRAL SYMMETRY-BREAKING IN CONFINING THEORIES [J].