We study the interactions of a static quark-antiquark pair at nonzero temperature using realistic $2+1$ flavor lattice QCD calculations. The consists two parts. first investigates properties Wilson line correlators in Coulomb gauge and compares to predictions hard-thermal loop perturbation theory. As second step we extract spectral functions underlying four conceptually different methods: funct...

A local Hawking temperature is derived for any future outer trapping horizon in spherical symmetry, using a Hamilton-Jacobi variant of the Parikh-Wilczek tunneling method. It is given by a dynamical surface gravity as defined geometrically. The operational meaning of the temperature is that Kodama observers just outside the horizon measure an invariantly redshifted temperature, diverging at the...