6533b831fe1ef96bd12990fb
RESEARCH PRODUCT
Mass generation in Yang-Mills theories *
Daniele BinosiArlene Cristina AguilarJoannis PapavassiliouC. T. Figueiredosubject
Physics010308 nuclear & particles physicsHigh Energy Physics::LatticePhysicsQC1-999Mass generationHigh Energy Physics::PhenomenologyPropagatorYang–Mills existence and mass gap01 natural sciencesGluonMassless particleTheoretical physicsHigh Energy Physics::TheoryLattice (order)0103 physical sciencesGauge theory010306 general physicsClose contactdescription
In this talk we review recent progress on our understanding of the nonperturbative phenomenon of mass generation in non-Abelian gauge theories, and the way it manifests itself at the level of the gluon propagator, thus establishing a close contact with a variety of results obtained in large-volume lattice simulations. The key observation is that, due to an exact cancellation operating at the level of the Schwinger-Dyson equations, the gluon propagator remains rigorously massless, provided that the fully-dressed vertices of the theory do not contain massless poles. The inclusion of such poles activates the well-known Schwinger mechanism, which permits the evasion of the aforementioned cancellation, and accounts for the observed infrared finiteness of the gluon propagator both in the Landau gauge and away from it.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-01-01 | EPJ Web of Conferences |