IR suppression of the Coulomb gauge gluon propagator in SU(3) Yang-Mills theory

Details IR suppression of the Coulomb gauge gluon propagator in SU(3) Yang-Mills theory IR suppression of the Coulomb gauge gluon propagator in SU(3) Yang-Mills theory

2009-02-02

arxiv.org/abs/0902.0309v1

PoS Confinement8:189,2008

Physics

High Energy Physics

High Energy Physics - Lattice

Scientific paper

We calculate the equal-time transverse gluon propagator in Coulomb gauge QCD using a SU(3) quenched lattice gauge simulation on large lattices, up to 11 [fm$^4$]. We find that the equal-time gluon propagator shows scaling violation; namely, the data for different lattice spacings do not fall on top of one curve. This problem is cured by discarding data at large momenta, which suffer from discretization errors. In the infrared region, the transverse gluon propagator is strongly suppressed and shows a turnover at about 500 [MeV]. Fitting the power law ansatz to the data at small momenta predicts the vanishing gluon propagator at zero momentum, indicating the confinement of gluons.

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