Abstract
High-energy particles traversing a medium experience modified dispersion. In the Quark-Gluon Plasma, such dispersion affects jet propagation and transport properties and should be determined better. Above ~ 2Tc we expect strongly coupled infrared behavior and perturbative ultraviolet behavior, allowing a perturbative matching to an effective theory called EQCD, which can be studied non-perturbatively. We study the relevant non-local operator in EQCD at next-to-leading order which allows for a complete EQCD-to-lattice match and prepares the groundwork for a matching between EQCD and full QCD. Our results in EQCD show remarkable agreement between perturbation theory and the lattice in the expected regime.
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Ghiglieri, J., Moore, G.D., Schicho, P. et al. The force-force-correlator in hot QCD perturbatively and from the lattice. J. High Energ. Phys. 2022, 58 (2022). https://doi.org/10.1007/JHEP02(2022)058
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DOI: https://doi.org/10.1007/JHEP02(2022)058