The imaginary part of the heavy-quark potential from real-time Yang-Mills dynamics

Abstract: The suppression of heavy quark-antiquark bound states like bottomonium in heavy-ion collisions is an important observable for the quark-gluon plasma state. Theoretically, this can be quantified by the heavy-quark potential. In this talk, I will present our results on extracting its imaginary part using classical-statistical simulations of real-time Yang-Mills dynamics in classical thermal equilibrium. We compare our results to perturbation theory calculations in hard thermal loop formalisms. We find that, when considered as a function of m_D r, where m_D is the soft scale, the imaginary part of the heavy-quark potential becomes independent of the lattice spacing at sufficiently small r and agrees well with perturbative results. We finally relate the short-distance behavior of the potential to the heavy-quark transport coefficient κ, providing an estimate of the latter.

general relativity and quantum cosmologyHEP - phenomenologyHEP - theorymathematical physicsquantum physics

Audience: researchers in the topic

HEP seminars TU Wien (Vienna)

Series comments: ID number: 954 8284 9369