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The four-gluon vertex from lattice QCD
Authors: Colaço, M.; Oliveira, O.; Paulo J. Silva
Ref.: 41st International Symposium on Lattice Field Theory (LATTICE2024), 28 July - 3 August, Liverpool, UK., 391 (2024)
Abstract: The four-gluon one-particle irreducible Green function contributes to various quantities with phenomenological relevance. An example where the four-gluon plays a role is the determination of the gluon propagator, a basic building block for QCD, using continuum methods. This four leg Green function is poorly known and we are only starting to grasp its non-perturbative structure. Here, we report on the computation of the one-particle irreducible four-gluon Green function, in the Landau gauge, with lattice simulations. Besides stating the problems associated with the computation, several form factors that characterise this Green function are measured.
