Adjoint chromoelectric and -magnetic correlators with gradient flow
Author:
Viljami Leino
Keyword:
High Energy Physics - Lattice, High Energy Physics - Lattice (hep-lat)
journal:
MITP-23-081
date:
2024-01-12 00:00:00
Abstract
When QCD is described by a nonrelativistic effective field theory, operators consisting of gluonic correlators of two chromoelectric or -magnetic fields will often appear in descriptions of quarkonium physics. At zero T, these correlators give the masses of gluelumps and the moments of these correlators can be used to understand the inclusive P-wave decay of quarkonium. At finite T these correlators define the diffusion of the heavy quarkonium. However, these correlators come with a divergent term in lattice spacing which needs to be taken care of. We inspect these correlators in pure gauge theory with gradient flow smearing, which should allow us to reduce and remove the divergence more carefully. In these proceedings, we focus on the effect of gradient flow to these correlators and the reduction of this divergence.PDF: Adjoint chromoelectric and -magnetic correlators with gradient flow.pdf