scholarly journals Triple-gluon and quark-gluon vertex from lattice QCD in Landau gauge

2017 ◽  
Author(s):  
Andre Sternbeck ◽  
Paul-Herrmann Balduf ◽  
Ayse Kizilersu ◽  
Orlando Oliveira ◽  
Paulo Silva ◽  
...  
Keyword(s):  
Lattice Qcd ◽  
Landau Gauge ◽  
Gluon Vertex

scholarly journals Another look at the Landau gauge three-gluon vertex

2022 ◽  
Vol 258 ◽  
pp. 02008
Author(s):  
Guilherme T. R. Catumba ◽  
Orlando Oliveira ◽  
Paulo J. Silva
Keyword(s):  
Form Factor ◽  
Lattice Qcd ◽  
Landau Gauge ◽  
Low Energy ◽  
Unique Form ◽  
Gluon Vertex ◽  
Statistical Ensembles ◽  
Energy Behavior ◽  
Kinematical Configuration

We revisit the computation of the three-gluon vertex in the Landau gauge using lattice QCD simulations with large physical volumes of ~ (6.5 fm)4 and ~ (8 fm) 4 and large statistical ensembles. For the kinematical configuration analysed, that is described by a unique form factor, an evaluation of the lattice artefacts is also performed. Particular attention is given to the low energy behavior of vertex and its connection with evidence (or lack of it) of infrared ghost dominance.

scholarly journals Three-gluon vertex in Landau gauge

2014 ◽  
Vol 89 (10) ◽  
Author(s):  
Gernot Eichmann ◽  
Richard Williams ◽  
Reinhard Alkofer ◽  
Milan Vujinovic
Keyword(s):  
Landau Gauge ◽  
Gluon Vertex

scholarly journals Gauge-fixed Lattice QCD and the dispersion relation of Wilson fermions

2022 ◽  
Vol 258 ◽  
pp. 02003
Author(s):  
Giuseppe Burgio ◽  
Hannes Vogt
Keyword(s):  
Dispersion Relation ◽  
Lattice Qcd ◽  
Correlation Functions ◽  
Landau Gauge ◽  
Coulomb Gauge ◽  
Tree Level ◽  
Wilson Fermions

We show that, when investigating Wilson-fermions correlation functions on the lattice, one is bound to encounter major difficulties in defining their dispersion relation, even at tree level. The problem is indeed quite general and, although we stumbled upon it while studying Coulomb-gauge applications, it also affects gauge fixed studies in covariant gauges, including their most popular version, Landau gauge. In this paper we will discuss a solution to this problems based on a redefinition of the kinematic momentum of the fermion.

scholarly journals LATTICE QCD GLUON PROPAGATORS NEAR TRANSITION TEMPERATURE

2012 ◽  
Vol 27 (09) ◽  
pp. 1250050 ◽  
Author(s):  
V. G. BORNYAKOV ◽  
V. K. MITRJUSHKIN
Keyword(s):  
Transition Temperature ◽  
Lattice Qcd ◽  
Finite Volume ◽  
Momentum Space ◽  
Transition Point ◽  
Gluon Propagator ◽  
Landau Gauge ◽  
Volume Dependence ◽  
Gauge Fixing ◽  
Two Phases

Landau gauge gluon propagators are studied numerically in the SU (3) gluodynamics as well as in the full QCD with the number of flavors nF = 2 using efficient gauge fixing technique. We compare these propagators at temperatures very close to the transition point in two phases: confinement and deconfinement. The electric mass mE has been determined from the momentum space longitudinal gluon propagator. Gribov copy effects are found to be rather strong in the gluodynamics, while in the full QCD case they are weak ("Gribov noise"). Also we analyze finite volume dependence of the transverse and longitudinal propagators.

scholarly journals Two-point functions of quenched Lattice QCD in Numerical Stochastic Perturbation Theory. (I) The ghost propagator in Landau gauge

2010 ◽  
Vol 831 (1-2) ◽  
pp. 262-284 ◽  
Author(s):  
F. Di Renzo ◽  
E.-M. Ilgenfritz ◽  
H. Perlt ◽  
A. Schiller ◽  
C. Torrero
Keyword(s):  
Perturbation Theory ◽  
Lattice Qcd ◽  
Stochastic Perturbation ◽  
Landau Gauge ◽  
Ghost Propagator

scholarly journals Infrared behavior of the ghost-gluon vertex in Landau gauge Yang-Mills theory

2005 ◽  
Vol 72 (1) ◽  
Author(s):  
W. Schleifenbaum ◽  
A. Maas ◽  
J. Wambach ◽  
R. Alkofer
Keyword(s):  
Landau Gauge ◽  
Gluon Vertex ◽  
Yang Mills ◽  
Infrared Behavior

scholarly journals Landau gauge gluon and ghost propagators from lattice QCD withNf=2twisted mass fermions at finite temperature

2013 ◽  
Vol 87 (11) ◽  
Author(s):  
R. Aouane ◽  
F. Burger ◽  
E.-M. Ilgenfritz ◽  
M. Müller-Preussker ◽  
A. Sternbeck
Keyword(s):  
Lattice Qcd ◽  
Finite Temperature ◽  
Landau Gauge
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