Zobrazeno 1 - 10
of 161
pro vyhledávání: '"Cucchieri, Attilio"'
Pad\'e approximants are employed in order to study the analytic structure of the four-dimensional SU(2) Landau-gauge gluon and ghost propagators in the infrared regime. The approximants, which are model independent, are used as fitting functions to l
Externí odkaz:
http://arxiv.org/abs/2211.16088
Probing the singularities of the Landau-gauge gluon and ghost propagators with rational approximants
We employ Pad\'e approximants in the study of the analytic structure of the four-dimensional $SU(2)$ Landau-gauge gluon and ghost propagators in the infrared regime. The approximants, which are model independent, serve as fitting functions for the la
Externí odkaz:
http://arxiv.org/abs/2210.10490
Autor:
Cucchieri, Attilio, Dudal, David, Mendes, Tereza, Oliveira, Orlando, Roelfs, Martin, Silva, Paulo J.
We discuss possible definitions of the Faddeev-Popov matrix for the minimal linear covariant gauge on the lattice and present preliminary results for the ghost propagator.
Comment: 8 pages (XIII Quark Confinement and the Hadron Spectrum - Confin
Comment: 8 pages (XIII Quark Confinement and the Hadron Spectrum - Confin
Externí odkaz:
http://arxiv.org/abs/1812.00429
Autor:
Cucchieri, Attilio, Dudal, David, Mendes, Tereza, Oliveira, Orlando, Roelfs, Martin, Silva, Paulo J.
We discuss the subtleties concerning the lattice computation of the ghost propagator in linear covariant gauges, and present preliminary numerical results.
Comment: 4 pages, 2 figures, Lattice 2018 proceedings
Comment: 4 pages, 2 figures, Lattice 2018 proceedings
Externí odkaz:
http://arxiv.org/abs/1811.11521
Autor:
Cucchieri, Attilio, Dudal, David, Mendes, Tereza, Oliveira, Orlando, Roelfs, Martin, Silva, Paulo J.
Publikováno v:
Phys. Rev. D 98, 091504 (2018)
We discuss a possible definition of the Faddeev-Popov matrix for the minimal linear covariant gauge on the lattice and present first results for the ghost propagator. We consider Yang-Mills theory in four space-time dimensions, for SU(2) and SU(3) ga
Externí odkaz:
http://arxiv.org/abs/1809.08224
We consider the interquark potential in the one-gluon-exchange (OGE) approximation, using a fully nonperturbative gluon propagator from large-volume lattice simulations. The resulting VLGP potential is non-confining, showing that the OGE approximatio
Externí odkaz:
http://arxiv.org/abs/1704.08288
Autor:
Cucchieri, Attilio, Mendes, Tereza
Publikováno v:
Phys. Rev. Lett. 118, 192002 (2017)
By exploiting the similarity between Bloch's theorem for electrons in crystalline solids and the problem of Landau gauge-fixing in Yang-Mills theory on a "replicated" lattice, one is able to obtain essentially infinite-volume results from numerical s
Externí odkaz:
http://arxiv.org/abs/1612.01279
Autor:
Cucchieri, Attilio, Mendes, Tereza
We evaluate the so-called Bose-ghost propagator Q(p^2) for SU(2) gauge theory in minimal Landau gauge, considering lattice volumes up to 120^4 and physical lattice extents up to 13.5 f. In particular, we investigate discretization effects, as well as
Externí odkaz:
http://arxiv.org/abs/1611.04789
Autor:
Cucchieri, Attilio, Mendes, Tereza
Publikováno v:
Phys. Rev. D 94, 014505 (2016)
We present numerical details of the evaluation of the so-called Bose-ghost propagator in lattice minimal Landau gauge, for the SU(2) case in four Euclidean dimensions. This quantity has been proposed as a carrier of the confining force in the Gribov-
Externí odkaz:
http://arxiv.org/abs/1604.07009
Publikováno v:
Phys. Rev. D 93, 094513 (2016)
We present an analytic description of numerical results for the ghost propagator G(p^2) in minimal Landau gauge on the lattice. The data were produced in the SU(2) case using the largest lattice volumes to date, for d = 2, 3 and 4 space-time dimensio
Externí odkaz:
http://arxiv.org/abs/1602.01646