Landau-gauge propagators in Yang-Mills theories at β=0: Massive solution versus conformal scaling

被引：131

作者：

Cucchieri, A. ^{[1
]}

Mendes, T. ^{[1
,2
]}

机构：

[1] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

[2] DESY Zeuthen, D-15738 Zeuthen, Germany

来源：

PHYSICAL REVIEW D | 2010年 / 81卷 / 01期

基金：

巴西圣保罗研究基金会;

关键词：

FUNDAMENTAL MODULAR REGION; DYSON-SCHWINGER EQUATIONS; CRITICAL SLOWING-DOWN; GLUON PROPAGATOR; INFRARED BEHAVIOR; QUARK CONFINEMENT; LATTICE LANDAU; GRIBOV COPIES; SU(2); QCD;

D O I：

10.1103/PhysRevD.81.016005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study Landau-gauge gluon and ghost propagators in Yang-Mills theories at lattice parameter beta = 0, considering relatively large lattice volumes for the case of the SU(2) gauge group in three and four space-time dimensions. We compare the lattice data to the so-called massive and conformal-scaling solutions, examining the requirements for a good description of the propagators over various ranges of momenta and discussing possible systematic errors. Our analysis strongly supports the massive solution, i.e. a finite gluon propagator and an essentially free ghost propagator in the infrared limit, in disagreement with A. Sternbeck and L. von Smekal, arXiv:0811.4300.. Moreover, we argue that discretization effects play no role in the analysis of these propagators.

引用

页数：17

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