arXiv subjects

Nuno Brito

Publications and source records attributed to Nuno Brito.

3 recordsLinked to original sources

arXiv2025

The four-gluon and ghost-gluon vertices in the Landau gauge from lattice simulations

The computation of the four-gluon and ghost-gluon vertices in the Landau gauge using high statistical lattice ensembles for $32^4$ and $48^4$ volumes is addressed. For the four-gluon vertex, our previous results for the collinear kinematics are updated allowing to get a better coverage of the IR region. Furthermore, the one-particle irreducible ghost-gluon Green function in the soft gluon limit is computed covering, with precision, a large momentum region.

hep-lat↗

arXiv2024

High statistical computation of the Landau gauge ghost-gluon vertex

The lattice computation of the one-particle irreducible ghost-gluon Green function in the Landau gauge is revisited with a set of large gauge ensembles. The large statistical ensembles enable a precise determination of this Green function over a wide range of momenta, accessing its IR and UV properties with a control on the lattice effects.

hep-lat↗

arXiv2023

Computation of the Kugo-Ojima function from lattice simulations

In addition to its connection with a standard confinement criterion, the Kugo-Ojima function constitutes an indispensable component in a multitude of applications in the gauge sector of QCD. In the present work we report on preliminary results of an ongoing large-volume lattice simulation of this special function. In particular, the volume-dependence of the data is studied in detail, and a comparison with results obtained from Schwinger-Dyson equations is carried out.

hep-lat↗