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K. Boguslavski:
"The imaginary part of the heavy-quark potential from real-time Yang-Mills dynamics";
Talk: Heidelberg Stavanger Lattice & Machine Learning Seminar, Heidelberg and Stavanger (online) (invited); 2021-04-14.

In this talk, I will present our results on extracting the imaginary part of the heavy-quark potential using classical-statistical simulations of real-time Yang-Mills dynamics in classical thermal equilibrium. We compare our results to continuum expressions obtained using hard thermal loop theory and to semi-analytic lattice perturbation theory calculations using the hard classical loop formalism. We find that, when plotted as a function of m_D r, where m_D is the Debye mass, the imaginary part of the heavy-quark potential becomes independent of the lattice spacing at sufficiently small r and agrees well with the semi-analytic hard classical loop result. We also extract an estimate of the heavy-quark transport coefficient κ from the short-distance behavior of the classical potential. This work sets the stage for extracting the imaginary part of the heavy-quark potential in an expanding non-equilibrium Yang Mills plasma.