2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/45284The computation of order $e^4$ and $e^5$ contributions to the pressure of massless quantum electrodynamics at a temperature $T$ is overviewed.(SPhT/94-098, ANL-HEP-CP-94-52), presented at the Workshop of Quantum Infrared Physics, Paris, June 6-10, 1994High Energy Physics - Phenomenologytext