Zobrazeno 1 - 10
of 147
pro vyhledávání: '"Vandersickel, N."'
Autor:
Vandersickel, N., Zwanziger, Daniel
In 1967, Faddeev and Popov were able to quantize the Yang-Mills theory by introducing new particles called ghost through the introduction of a gauge. Ever since, this quantization has become a standard textbook item. Some years later, Gribov discover
Externí odkaz:
http://arxiv.org/abs/1202.1491
The gluon propagator is one of the fundamental Green's functions of QCD. It is an essential ingredient in, for example, the modeling of the Schwinger-Dyson equation used to describe hadronic phenomenology. From the Landau gauge gluon propagator, comp
Externí odkaz:
http://arxiv.org/abs/1109.3439
In recent years, the Gribov-Zwanziger action was refined by taking into account certain dimension 2 condensates. In this fashion, one succeeded in bringing the gluon and the ghost propagator obtained from the GZ model in qualitative and quantitative
Externí odkaz:
http://arxiv.org/abs/1105.3371
Publikováno v:
PoS FacesQCD:044,2010
The purpose of this proceeding is twofold. Firstly, we shall make the refining of the Gribov-Zwanziger action more complete by taking into account more condensates than considered so far. Secondly, we shall provide more evidence for the refined Gribo
Externí odkaz:
http://arxiv.org/abs/1102.0866
Publikováno v:
AIP Conf.Proc.1343:155-157,2011
Over the last years, lattice calculations in pure Yang-Mills gauge theory seem to have come more or less to a consensus. The ghost propagator is not enhanced and the gluon propagator is positivity violating, infrared suppressed and non-vanishing at z
Externí odkaz:
http://arxiv.org/abs/1010.4448
Autor:
Dudal, D., Vandersickel, N.
Publikováno v:
Phys.Lett.B700:369-379,2011
We localize a previously established nonlocal BRST invariance of the Gribov-Zwanziger (GZ) action by the introduction of additional fields. We obtain a modified GZ action with a corresponding local BRST invariance. We show that correlation functions
Externí odkaz:
http://arxiv.org/abs/1010.3927
Autor:
Dudal, D., Vandersickel, N., Baulieu, L., Sorella, S. P., Guimaraes, M. S., Huber, M. Q., Oliveira, O., Zwanziger, D.
Publikováno v:
PoS LC2010:021,2010
During recent years, a good agreement was found between the analytical derivation and the numerical simulation of the Landau gauge gluon and ghost propagators. We mention the Schwinger-Dyson and Gribov-Zwanziger formalism for the analytical work. Alt
Externí odkaz:
http://arxiv.org/abs/1009.5846
Autor:
Sorella, S. P., Baulieu, L., Dudal, D., Guimaraes, M. S., Huber, M. Q., Vandersickel, N., Zwanziger, D.
We summarize the construction of the Gribov-Zwanziger action and how it leads to a scenario which explains the confinement of gluons, in the sense that the elementary gluon excitations violate positivity. Then we address the question of how one can c
Externí odkaz:
http://arxiv.org/abs/1003.0086
Publikováno v:
Phys.Rev.D81:074505,2010
We consider the gluon propagator $D(p^2)$ at various lattice sizes and spacings in the case of pure SU(3) Yang-Mills gauge theories using the Landau gauge fixing. We discuss a class of fits in the infrared region in order to (in)validate the tree lev
Externí odkaz:
http://arxiv.org/abs/1002.2374
Publikováno v:
Eur.Phys.J.C68:283-298,2010
In this paper we provide strong evidence that there is no ambiguity in the choice of the horizon function underlying the Gribov-Zwanziger action. We show that there is only one correct possibility which is determined by the requirement of multiplicat
Externí odkaz:
http://arxiv.org/abs/1001.3103