Title: Non-equilibrium approach to heavy-quark transport
Date: Sep 29, 2026
Time: 13:30 - 14:30
Speaker: Dr. Juhee Hong
Affiliation: Yongsei University
Abstract: We discuss a non-equilibrium Green’s function approach to heavy-quark transport within the framework of the Kadanoff-Baym equation. To describe the transition from collisional to radiative energy loss of heavy quark, we evaluate one- and two-loop self-energy diagrams with hard-thermal-loop resummed propagators. Under the quasi-particle approximation, the kinetic equation reduces to the Boltzmann equation that accounts for elastic scattering and medium-induced gluon emission from a single scattering. Building on the self-energy constructed from interacting Green’s functions, we investigate off-shell and memory effects in quark-gluon plasmas. Numerical studies suggest that non-equilibrium quantum effects influence heavy-quark dynamics, particularly near the critical temperature.