6533b821fe1ef96bd127c0b5

RESEARCH PRODUCT

Non-Perturbative Propagators in QCD

Martin Lavelle

subject

PhysicsQuantum chromodynamicssymbols.namesakeTheoretical physicsLattice (order)High Energy Physics::PhenomenologyHadronsymbolsPropagatorLattice QCDOperator product expansionNon-perturbativeLagrangian

description

Over the last two decades it has become clear that perturbation theory can only give us very limited information about QCD. For example it is not sufficient to describe that most basic of things, the mass spectrum. Although, we may hope one day to gain from the lattice approach numerical confirmation that we have the correct Lagrangian to describe hadronic physics, that day is not at hand. In the meantime it will be argued here, the operator product expansion (OPE) offers us some useful non-perturbative information about the structure of QCD.

https://doi.org/10.1007/978-1-4757-9835-7_5