Gluon Mass in Landau Gauge QCD

P. Bicudo; O. Oliveira

Gluon Mass in Landau Gauge QCD

High Energy Physics - Lattice 2011-01-27 v1

Authors: P. Bicudo , O. Oliveira

Abstract

The interpretation of the Landau gauge lattice gluon propagator as a massive type bosonic propagator is investigated for i) an infrared constant gluon mass; ii) an ultraviolet constant gluon mass; iii) a momentum dependent mass. We find that the infrared data can be associated with a massive propagator with a constant gluon mass of 651(12) MeV, but the ultraviolet lattice data is not compatible this type of propagator. The scenario of a momentum dependent gluon mass gives a decreasing mass with the momentum, starting from a value of $\sim 630$ MeV in the infrared region and suggesting a $q^2 \ln q^2$ dependence for momenta above 1 GeV.

Keywords

gluon mass Landau gauge lattice QCD gluon propagator momentum dependence

Cite

@article{arxiv.1010.1975,
  title  = {Gluon Mass in Landau Gauge QCD},
  author = {P. Bicudo and O. Oliveira},
  journal= {arXiv preprint arXiv:1010.1975},
  year   = {2011}
}

Comments

Contribution to The XXVIII International Symposium on Lattice Field Theory, Lattice2010

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