Higher-loop gluon and ghost propagators in Landau gauge from numerical stochastic perturbation theory

Details Higher-loop gluon and ghost propagators in Landau gauge from numerical stochastic perturbation theory Higher-loop gluon and ghost propagators in Landau gauge from numerical stochastic perturbation theory

2008-12-17

arxiv.org/abs/0812.3307v1

PoS Confinement8:050,2008

Physics

High Energy Physics

High Energy Physics - Lattice

6 pages, 8 figures, talk presented at the conference "Quark Confinement and the Hadron Structure VIII", Mainz, Germany, Septem

Scientific paper

We present higher loop results for the gluon and ghost propagator in Landau gauge on the lattice calculated in numerical stochastic perturbation theory. We make predictions for the perturbative content of those propagators as function of the lattice momenta for finite lattices. To find out their nonperturbative contributions, the logarithmic definition of the gauge fields and the corresponding Faddeev-Popov operator have to be implemented in the Monte Carlo simulations.

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