Non-perturbative renormalisation and improvement of the local vector current for quenched and unquenched Wilson fermions

被引：29

作者：

Bakeyev, T ^{[1
]}

Göckeler, M

Horsley, R

Pleiter, D

Rakow, PEL

Schierholz, G

Stüben, H

机构：

[1] Joint Nucl Res Inst, RU-141980 Dubna, Russia

[2] Univ Leipzig, Inst Theoret Phys, D-04109 Leipzig, Germany

[3] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany

[4] Univ Edinburgh, Sch Phys, Edinburgh EH9 3JZ, Midlothian, Scotland

[5] NIC, John von Neumann Inst Comp, D-15738 Zeuthen, Germany

[6] Univ Liverpool, Dept Math Sci, Div Phys Theor, Liverpool L69 3BX, Merseyside, England

[7] DESY, Deutsch Elektronen Synchrotron, D-22603 Hamburg, Germany

[8] Konrad Zuse Zentrum Informat Tech Berlin, D-14195 Berlin, Germany

来源：

PHYSICS LETTERS B | 2004年 / 580卷 / 3-4期

关键词：

D O I：

10.1016/j.physletb.2003.11.050

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

By considering the local vector current between nucleon states and imposing charge conservation, we determine its renormalisation constant and quark mass improvement coefficient for Symanzik O(a) improved Wilson fermions. The computation is first performed for quenched fermions (and for completeness also with unimproved fermions) and compared against known results. The two-flavour unquenched case is then considered. (C) 2003 Elsevier B.V. All rights reserved.

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页码：197 / 208

页数：12

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