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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
Cucchieri, A. [1] ; Mendes, T. [1, 2]
Total Authors: 2
Affiliation:
[1] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil
[2] DESY Zeuthen, D-15738 Zeuthen - Germany
Total Affiliations: 2
Document type: Review article
Source: Physical Review D; v. 81, n. 1 JAN 2010.
Web of Science Citations: 92
Abstract

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. (AU)