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arXiv · 2007.10078

Lattice QCD constraints on the heavy quark diffusion coefficient

Nora Brambilla·Viljami Leino·Peter Petreczky·Antonio Vairo
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Abstract

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 $1.1 < T / T_c < 10^4$ 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.

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Nora Brambilla, Viljami Leino, Peter Petreczky, Antonio Vairo. 2020-07-20. Lattice QCD constraints on the heavy quark diffusion coefficient. https://doi.org/10.1103/physrevd.102.074503

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