6533b82cfe1ef96bd128f4f3
RESEARCH PRODUCT
On the zero crossing of the three-gluon vertex
Daniele BinosiJoannis PapavassiliouSavvas ZafeiropoulosF. De SotoJose Rodríguez-quinteroAndreas AthenodorouPh. Boucaudsubject
High Energy Physics - TheoryNuclear and High Energy PhysicsLattice simulationsInfraredHigh Energy Physics::LatticeFOS: Physical sciencesThree-gluon vertexKinematicsnonperturbative01 natural sciencesSchwinger–Dyson equations[ PHYS.HTHE ] Physics [physics]/High Energy Physics - Theory [hep-th]High Energy Physics - Phenomenology (hep-ph)High Energy Physics - LatticeQuantum mechanicsLattice (order)0103 physical sciencesddc:530Exact locationquantum chromodynamics: quenching010306 general physicsMathematical physicslatticeQuantum chromodynamicsPhysicsZero crossing010308 nuclear & particles physics[PHYS.HLAT]Physics [physics]/High Energy Physics - Lattice [hep-lat][PHYS.HTHE]Physics [physics]/High Energy Physics - Theory [hep-th]High Energy Physics::PhenomenologyHigh Energy Physics - Lattice (hep-lat)[ PHYS.HLAT ] Physics [physics]/High Energy Physics - Lattice [hep-lat]gluon: vertexcrossingZero crossingghostlcsh:QC1-999GluonDyson-Schwinger equationHigh Energy Physics - PhenomenologyHigh Energy Physics - Theory (hep-th)[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph]infrared[ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph]lcsh:Physicsdescription
We report on new results on the infrared behaviour of the three-gluon vertex in quenched Quantum Chormodynamics, obtained from large-volume lattice simulations. The main focus of our study is the appearance of the characteristic infrared feature known as 'zero crossing', the origin of which is intimately connected with the nonperturbative masslessness of the Faddeev-Popov ghost. The appearance of this effect is clearly visible in one of the two kinematic configurations analyzed, and its theoretical origin is discussed in the framework of Schwinger-Dyson equations. The effective coupling in the momentum subtraction scheme that corresponds to the three-gluon vertex is constructed, revealing the vanishing of the effective interaction at the exact location of the zero crossing.
year | journal | country | edition | language |
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2016-10-01 |