7 papers
Infrared properties of the quark-gluon vertex in general kinematics
A. C. Aguilar, M. N. Ferreira, G. T. Linhares +2
In the present work we determine the eight form factors of the transversely-projected quark-gluon vertex in general kinematics, in the context of Landau-gauge QCD with two degenera…
Nonperturbative four-gluon vertex in soft kinematics
A. C. Aguilar, F. De Soto, M. N. Ferreira +4
We present a nonperturbative study of the form factor associated with the projection of the full four-gluon vertex on its classical tensor, for a set of kinematics with one vanishi…
Nonlinear Schwinger mechanism in QCD, and Fredholm alternatives theorem
M. N. Ferreira, J. Papavassiliou
We present a novel implementation of the Schwinger mechanism in QCD, which fixes uniquely the scale of the effective gluon mass and streamlines considerably the procedure of multip…
Lattice determination of the Batalin-Vilkovisky function and the strong running interaction
A. C. Aguilar, N. Brito, M. N. Ferreira +3
The Batalin-Vilkovisky function is a central component in the modern formulation of the background field method and the physical applications derived from it. In the present work w…
Four-gluon vertex in collinear kinematics
A. C. Aguilar, M. N. Ferreira, J. Papavassiliou +1
To date, the four-gluon vertex is the least explored component of the QCD Lagrangian, mainly due to the vast proliferation of Lorentz and color structures required for its descript…
Schwinger displacement of the quark-gluon vertex
A. C. Aguilar, M . N. Ferreira, D. Ibañez +1
The action of the Schwinger mechanism in pure Yang-Mills theories endows gluons with an effective mass, and, at the same time, induces a measurable displacement to the Ward identit…