We report progress towards computing the heavy quark momentum diffusion coefficient from the correlator of two chromo-electric fields attached to a Polyakov loop in pure SU(3) gauge theory. Using a multilevel algorithm and tree-level improvement, we study the behavior of the diffusion coefficient as a function of temperature in the wide range 1.1<T/Tc<104 in order to compare it to perturbative expansions at high temperature. We find that within errors the lattice results are remarkably compatible with the next-to-leading order perturbative result.
@article{arxiv.2007.10078,
title = {Lattice QCD constraints on the heavy quark diffusion coefficient},
author = {Nora Brambilla and Viljami Leino and Peter Petreczky and Antonio Vairo},
journal= {arXiv preprint arXiv:2007.10078},
year = {2020}
}
Comments
16 pages, 18 figures, v2: updated to match published version