Gluon and Ghost Dynamics from Lattice QCD

Abstract

The two point gluon and ghost correlation functions and the three gluon vertex are investigated, in the Landau gauge, using lattice simulations. For the two point functions, we discuss the approach to the continuum limit looking at the dependence on the lattice spacing and volume. The analytical structure of the propagators is also investigated by computing the corresponding spectral functions using an implementation of the Tikhonov regularisation to solve the integral equation. For the three point function we report results when the momentum of one of the gluon lines is set to zero and discuss its implications.

arXiv commentProceedings of Light Cone 2016, held in Lisbon, September 2016. Minor changes in text. To appear in Few B Sys

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Cited by in corpus (7)

• High Precision Statistical Landau Gauge Lattice Gluon Propagator Computation vs. the Gribov-Zwanziger approach
• Spectral representation of lattice gluon and ghost propagators at zero temperature
• The analytic structure of the lattice Landau gauge gluon and ghost propagators
• Quark-gluon vertex from Nf=2 lattice QCD
• $H(4)$ tensor representations for the lattice Landau gauge gluon propagator and the estimation of lattice artefacts
• Lattice pure gauge compact QED in the Landau gauge: the photon propagator, the phase structure and the presence of Dirac strings
• QCD effective charges and the structure function $F_2$ at small-$x$: Higher twist effects