We present a lattice determination of the heavy-quark diffusion coefficient in (2+1)-flavor QCD with almost physical quark masses. The momentum and spatial diffusion coefficients are extracted for a wide temperature range, from T=163 MeV to 10 GeV. The results are in agreement with previous works from the HotQCD collaboration, and show fast thermalization of the heavy quark inside the QGP. Near the chiral crossover temperature Tc≃150 MeV, our results are close to the AdS/CFT estimation computed at strong coupling.
@article{arxiv.2506.11958,
title = {Temperature Dependence of Heavy Quark Diffusion from (2+1)-flavor Lattice QCD},
author = {Dennis Bollweg and Jorge Luis Dasilva Golán and Olaf Kaczmarek and Rasmus Norman Larsen and Guy D. Moore and Swagato Mukherjee and Peter Petreczky and Hai-Tao Shu and Simon Stendebach and Johannes Heinrich Weber},
journal= {arXiv preprint arXiv:2506.11958},
year = {2025}
}