Improved chiral properties of FLIC fermions

被引：18

作者：

Boinepalli, S ^{[1
]}

Kamleh, W

Leinweber, DB

Williams, AG

Zanotti, JM

机构：

[1] Univ Adelaide, Special Res Ctr Subatom Struct Matter, Adelaide, SA 5005, Australia

[2] Univ Adelaide, Dept Phys, Adelaide, SA 5005, Australia

[3] DESY, NIC, John Von Neumann Inst Comp, D-15738 Zeuthen, Germany

来源：

PHYSICS LETTERS B | 2005年 / 616卷 / 3-4期

基金：

澳大利亚研究理事会;

关键词：

nonperturbative QCD; lattice fermions; chiral properties;

D O I：

10.1016/j.physletb.2005.04.050

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The chiral properties of the fat-link irrelevant clover (FLIC) fermion action are examined. The improved chiral Properties of fermion actions incorporating smoothed links are realised in the FLIC action where only the irrelevant operators of the fermion action are constructed with smoothed links. In particular, the histogram of the additive mass renormalisation encountered in chiral-symmetry breaking Wilson-type fermion actions is seen to narrow upon introducing fat links in the irrelevant operators. The exceptional configuration problem of quenched QCD is reduced, enabling access to the light quark mass regime of m(pi)/m(p) similar or equal to 1/3. In particular, quenched chiral nonanalytic behaviour is revealed in the light quark mass dependence of the Delta-baryon mass. FLIC fermions offer a promising approach to revealing the properties of full QCD at light quark masses. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：196 / 202

页数：7

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