Two-loop computation of the Schrodinger functional in lattice QCD

被引：77

作者：

Bode, A ^{[1
]}

Weisz, P

Wolff, U

机构：

[1] Florida State Univ, Supercomp Computat Res Inst, Tallahassee, FL 32306 USA

[2] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

[3] Humboldt Univ, Inst Phys, D-10099 Berlin, Germany

来源：

NUCLEAR PHYSICS B | 2000年 / 576卷 / 1-3期

关键词：

D O I：

10.1016/S0550-3213(00)00187-5

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：

We compute the Schrodinger functional (SF) for the case of lattice QCD with Wilson fermions (with and without SW improvement) at two-loop order in lattice perturbation theory. This allows us to extract the three-loop beta-function in the SF-scheme. These results are required to compute the running coupling, the Lambda-parameter and quark masses by finite size; techniques with negligible systematic errors. In addition our results enable the implementation of two-loop O(a) improvement in SF-simulations. (C) 2000 Elsevier Science B,V. All rights reserved.

引用

页码：517 / 539

页数：23

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