Orateur
M.
Rodrigo Terin
(Instituto Tecnológico de Aeronáutica (ITA))
Description
We investigate the generation of a gluon screening mass in Yang-Mills theory in the Landau gauge. We propose a gauge-fixing procedure where the Gribov ambiguity is overcome by summing over all Gribov copies with some weight function. This can be formulated in terms of a local field theory involving constrained, nonlinear sigma model fields. We show that a phenomenon of radiative symmetry restoration occurs in this theory, similar to what happens in the standard nonlinear sigma model in two dimensions. This results in a nonzero gluon screening mass, as seen in lattice simulations.
Auteurs principaux
Dr
Julien Serreau
(Université Paris Diderot)
Dr
Matthieu Tissier
(Sorbonne Université)
M.
Rodrigo Terin
(Instituto Tecnológico de Aeronáutica (ITA))
Dr
Urko Reinosa
(École Polytechnique)
