May 17 – 22, 2021
US/Eastern timezone

Heavy quark momentum diffusion from the lattice

May 20, 2021, 10:50 AM
Room A (Zoom)

Room A


zoom co-host: Niveditha Ramasubramanian
Theory talk Bulk matter phenomena associated with strange and heavy quarks Bulk (Lattice)


Luis Altenkort (Bielefeld University)


Heavy quark transport coefficients calculated from first-principles QCD are a crucial input for transport models. Utilizing the heavy quark limit, we will discuss the results of a novel approach to nonperturbatively estimate the heavy quark momentum diffusion coefficient in a hot gluonic medium from gradient-flowed color-electric correlators on the lattice. Unlike others, this approach can be extended to a medium with dynamical fermions. The correlation functions are computed on fine isotropic lattices at $1.5\,T_\mathrm{c}$ and are extrapolated to yield continuum data at zero flow time that is fully renormalized. Through theoretically well-established model fits we estimate the corresponding spectral function and in turn the diffusion coefficient, which is consistent with previous studies.

Primary author

Luis Altenkort (Bielefeld University)


Prof. Guy Moore (Technische Universität Darmstadt) Dr Olaf Kaczmarek (Bielefeld University) Dr Hai-Tao Shu (Bielefeld University) Mr Lukas Mazur (Bielefeld University) Dr Alexander Max Eller (Technische Universität Darmstadt)

Presentation materials