Speaker
Description
Heavy quarks serve as valuable probes of the quark–gluon plasma owing to their early production and subsequent interaction with the evolving medium. In this talk, we present our recent study of charm-quark transport within the Langevin and Fokker–Planck frameworks, incorporating memory effects through an exponentially decaying memory kernel. We discuss the extraction of heavy-quark transport coefficients using the Green–Kubo formalism based on the current–current correlation function. We show that memory effects modify the structure of the correlator, giving rise to a superposition of two exponential decay modes, while its time integral remains independent of the memory timescale. Finally, we discuss heavy-quark thermalization in a non-Markovian medium, where memory-induced damping leads to a damped oscillatory approach toward equilibrium.