6533b82afe1ef96bd128b966

RESEARCH PRODUCT

Confinement, the gluon propagator and the interquark potential for heavy mesons

Vicente Vento

subject

High Energy Physics - TheoryNuclear and High Energy PhysicsParticle physicsMesonHigh Energy Physics::LatticeFOS: Physical sciencesMechanism based01 natural sciencesHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciences010306 general physicsPhysicsCoupling constantQuantum chromodynamics010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyExchange interactionPropagatorGluonHigh Energy Physics - PhenomenologyHigh Energy Physics - Theory (hep-th)Quark ConfinementChiral-Symmetry BreakingFísica nuclearHigh Energy Physics::Experiment

description

The interquark static potential for heavy mesons described by a massive one-gluon exchange interaction obtained from the propagator of the truncated Dyson-Schwinger equations does not reproduced the expected Cornell potential. I show that no formulation based on a finite propagator will lead to confinement of quenched QCD. I propose a mechanism based on a singular nonperturbative coupling constant which has the virtue of giving rise to a finite gluon propagator and (almost) linear confinement. The mechanism can be slightly modified to produce the screened potentials of unquenched QCD.

https://doi.org/10.1140/epja/i2013-13071-2