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 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 Forward elastic scattering: dynamical gluon mass and semihard interactions

2019 ◽  
Vol 79 (12) ◽  
Author(s):  
M. Broilo ◽  
D. A. Fagundes ◽  
E. G. S. Luna ◽  
M. J. Menon
Keyword(s):  
Form Factor ◽  
Elastic Scattering ◽  
Crucial Role ◽  
High Energy ◽  
Low Energy ◽  
Parton Distributions ◽  
High Energies ◽  
High Energy Behavior ◽  
Energy Behavior

AbstractThe role of low-x parton dynamics in dictating the high-energy behavior of forward scattering observables at LHC energies is investigated using a QCD-based model with even-under-crossing amplitude dominance at high-energies. We explore the effects of different sets of pre- and post-LHC fine-tuned parton distributions on the forward quantities $$\sigma _{tot}$$σtot and $$\rho $$ρ, from pp and $${\bar{p}}p$$p¯p scattering in the interval 10 GeV–13 TeV. We also investigate the role of the leading soft contribution, the low-energy cuttoff, and the energy dependence of the semihard form factor on these observables. We show that in all cases investigated the highly restrictive data on $$\rho $$ρ parameter at $$\sqrt{s}=13$$s=13 TeV indicate that a crossing-odd component may play a crucial role in forward elastic scattering at the highest energies, namely the Odderon contribution.

scholarly journals Low-energy behavior of spin-liquid electron spectral functions

2013 ◽  
Vol 87 (4) ◽  
Author(s):  
Evelyn Tang ◽  
Matthew P. A. Fisher ◽  
Patrick A. Lee
Keyword(s):  
Low Energy ◽  
Spin Liquid ◽  
Spectral Functions ◽  
Energy Behavior

scholarly journals The pion form factor in improved lattice QCD

2003 ◽  
Vol 566 (1-2) ◽  
pp. 131-136 ◽  
Author(s):  
J. van der Heide ◽  
M. Lutterot ◽  
J.H. Koch ◽  
E. Laermann
Keyword(s):  
Form Factor ◽  
Lattice Qcd ◽  
Pion Form Factor

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

Low-Energy Theorems and High-Energy Behavior

1972 ◽  
Vol 6 (9) ◽  
pp. 2483-2487
Author(s):  
Michael Creutz
Keyword(s):  
High Energy ◽  
Low Energy ◽  
High Energy Behavior ◽  
Energy Behavior

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 Precision computation of a low-energy reference scale in quenched lattice QCD

1998 ◽  
Vol 535 (1-2) ◽  
pp. 389-402 ◽  
Author(s):  
Marco Guagnelli ◽  
Rainer Sommer ◽  
Hartmut Wittig
Keyword(s):  
Lattice Qcd ◽  
Low Energy ◽  
Reference Scale
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