A DEFINITION OF THE RUNNING COUPLING-CONSTANT IN A TWISTED SU(2) LATTICE GAUGE-THEORY

被引：22

作者：

DEDIVITIIS, GM ^{[1
]}

FREZZOTTI, R ^{[1
]}

GUAGNELLI, M ^{[1
]}

PETRONZIO, R ^{[1
]}

机构：

[1] INFN, I-00133 ROME, ITALY

来源：

NUCLEAR PHYSICS B | 1994年 / 422卷 / 1-2期

关键词：

D O I：

10.1016/0550-3213(94)00126-X

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 propose a novel definition of the running coupling constant in a quenched SU(2) lattice gauge theory with twisted boundary conditions suitable for non-perturbative numerical simulations. It is based on the correlation of Polyakov loops extended in a twisted direction at a distance which is a fixed fraction of the total lattice size. We make the perturbative calculation which connects this definition to standard regularization schemes. We find LAMBDA(twisted Polyakov)/LAMBDA(MSBAR) = 1.6136(2).

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页码：382 / 396

页数：15

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