PoS - Proceedings of Science
Volume 430 - The 39th International Symposium on Lattice Field Theory (LATTICE2022) - Non-zero Temperature
Heavy quark diffusion coefficient with gradient flow
V. Leino*, N. Brambilla, J. Mayer-Steudte and P. Petreczky
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Pre-published on: January 05, 2023
Published on: April 06, 2023
The heavy quark diffusion coefficient is encoded in the spectral functions of the chromo-electric and the chromo-magnetic correlators, of which the latter describes the T/M contribution. We study these correlators at two different temperatures $T=1.5 T_c$ and $T=10^4 T_c$ in the deconfined phase of SU(3) gauge theory. We use gradient flow for noise reduction. We perform both continuum and zero flow time limits to extract the heavy quark diffusion coefficient. Our results imply that the mass suppressed effects in the heavy quark diffusion coefficient are 20% for bottom quarks and 34% for charm quark at $T=1.5T_c$.
DOI: https://doi.org/10.22323/1.430.0183
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