2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/50645In this talk, I summarize the status of our understanding of the puzzle of large gauge invariance at finite temperature.Talk presented at the Brazilian physical society meeting, Department of Atomic Energy symposium and the 37th Karpacz winter school. To be published in the proceedingsHigh Energy Physics - Theorytext