2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/214721We present lattice studies of the running coupling in 2-flavor QCD. The coupling at zero temperature (T=0) is extracted from Wilson loops while the coupling at finite temperature ($T\neq0$) is determined from Polyakov loop correlation functions.Talk by F.Zantow at Hard Probes 2004, International Conference on Hard and Electromagnetic Probes of High Energy Nuclear Collisions, Nov. 4-10, 2004, Ericeira, Portugal, 4 pages, 5 figures, reference correctedHigh Energy Physics - LatticeHigh Energy Physics - Phenomenologytext