Heavy quark potential in quark-gluon Plasma: Deep neural network meets lattice quantum chromodynamics
Shuzhe Shi🇨🇦 · Kai Zhou🇩🇪 · Jiaxing Zhao🇨🇳 · Swagato Mukherjee🇺🇸 · Pengfei Zhuang🇨🇳
Bottomonium states are key probes for experimental studies of the quark-gluon plasma (QGP) created in high-energy nuclear collisions. Theoretical models of bottomonium productions in high-energy nuclear collisions rely on the in-medium interactions between the bottom and antibottom quarks. The latter can be characterized by the temperature () dependent potential, with real () and imaginary () parts, as a function of the spatial separation (). Recently, the masses and thermal widths of up to and bottomonium states in QGP were calculated using lattice quantum chromodynamics (LQCD). Starting from these LQCD results and through a novel application of deep neural network, here, we obtain and in a model-independent fashion. The temperature dependence of was found to be very mild between ~MeV. For ~MeV, shows a rapid increase with and , which is much larger than the perturbation-theory-based expectations.