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arXiv · 2501.17650

The four-gluon vertex from lattice QCD

Manuel Colaço·Orlando Oliveira·Paulo J. Silva
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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.

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Manuel Colaço, Orlando Oliveira, Paulo J. Silva. 2025-01-29. The four-gluon vertex from lattice QCD. https://arxiv.org/abs/2501.17650

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