The nonperturbative contribution to asymptotic masses
Guy D. Moore, Niels Schlusser
Abstract
In gauge theories, charged particles obey modified dispersion due to medium interactions (forward scattering), leading at high energies $E\ensuremath{\ge}T$ to an asymptotic mass-squared ${m}_{\ensuremath{\infty}}^{2}$. We calculate the infrared part of this mass nonperturbatively for the theory of the strong interactions, QCD, through a lattice treatment of its low-energy effective description, electrostatic QCD. Incorporation of these results into a nonperturbative determination of the effective thermal mass will require a still-incomplete next-to-leading order perturbative matching of this quantity to full QCD.
Topics & Concepts
PhysicsQuantum chromodynamicsParticle physicsLattice QCDLattice (music)Gauge theoryScatteringEffective mass (spring–mass system)Quantum electrodynamicsQuantum mechanicsAcousticsHigh-Energy Particle Collisions ResearchParticle physics theoretical and experimental studiesQuantum Chromodynamics and Particle Interactions