9 papers
Quark-gluon vertex in the complex plane
M. N. Ferreira, A. S. Miramontes, J. M. Morgado +1
In the present work we explore for the first time the general structure and properties of the nonperturbative quark-gluon vertex in the complex plane. Specifically, we focus on the…
Light mesons in the symmetric-vertex approximation
M. N. Ferreira, A. S. Miramontes, J. M. Morgado +1
We compute the spectrum of light mesons, composed by up, down, and strange quarks, using a symmetry-preserving approximation that permits the inclusion of fully-dressed quark-gluon…
Pions reloaded
M. N. Ferreira, A. S. Miramontes, J. M. Morgado +2
We present a novel version of the pion Bethe-Salpeter equation in the chiral limit, solved using as ingredients state-of-the-art QCD correlation functions. The constraints imposed…
Pion physics with dressed quark-gluon vertices
Mauricio N. Ferreira, Angel S. Miramontes, Jose M. Morgado +2
Recently, a theoretical framework was set up in [1], which allows for the symmetry-preserving inclusion of full quark-gluon vertices in the description of the meson dynamics. In th…
Physics of the gluon mass gap
Mauricio N. Ferreira, Joannis Papavassiliou, Jan M. Pawlowski +1
It has long been known that the gluon propagator in Landau-gauge QCD exhibits a mass gap; and its emergence has been ascribed to the action of the Schwinger mechanism in the gauge…
Gluon mass scale through the Schwinger mechanism
M. N. Ferreira, J. Papavassiliou
It has long been argued that the action of the Schwinger mechanism in the gauge sector of Quantum Chromodynamics leads to the generation of a gluon mass scale. Within this scenario…