Three-point vertex functions in Yang-Mills Theory and QCD in Landau gauge
arXiv:1611.04827 · doi:10.1051/epjconf/201713703001
Abstract
Solutions for the three-gluon and quark-gluon vertices from Dyson-Schwinger equations and the three-particle irreducible formalism are discussed. Dynamical quarks (``unquenching'') change the three-gluon vertex via the quark-triangle diagrams which themselves include fully dressed quark-gluon vertex functions. On the other hand, the quark-swordfish diagram is, at least with the model used for the two-quark-two-gluon vertex employed here, of minor importance. For the leading tensor structure of the three-gluon vertex the "unquenching" effect can be summarized for the nonperturbative part as a shift of the related dressing function towards the infrared.
Talk given by Adrian L. Blum at XIIth Quark Confinement and the Hadron Spectrum, August 28 - September 04, 2016, Thessaloniki, Greece
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Cited by in corpus (6)
- Nonperturbative Ball-Chiu construction of the three-gluon vertex
- On the self-consistency of off-shell Slavnov-Taylor identities in QCD
- More on the three-gluon vertex in SU(2) Yang-Mills theory in three and four dimensions
- One-loop unquenched three-gluon and ghost-gluon vertex in the Curci-Ferrari model
- Dynamical Chiral Symmetry Breaking in Quantum Chromo Dynamics: Delicate and Intricate
- A New Method for Calculating the Energies Associated with Particle Reactions