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

被引：130
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.
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页数：17
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