Two-loop QCD gauge coupling at high temperatures

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dc.creatorLaine, M.
dc.creatorSchroder, Y.
dc.date2005-03-07
dc.date.accessioned2026-07-07T10:44:15Z
dc.date.available2026-07-07T10:44:15Z
dc.descriptionWe determine the 2-loop effective gauge coupling of QCD at high temperatures, defined as a matching coefficient appearing in the dimensionally reduced effective field theory. The result allows to improve on one of the classic non-perturbative probes for the convergence of the weak-coupling expansion at high temperatures, the comparison of full and effective theory determinations of an observable called the spatial string tension. We find surprisingly good agreement almost down to the critical temperature of the deconfinement phase transition. We also determine one new contribution of order O(g^6T^4) to the pressure of hot QCD.
dc.description17 pages
dc.identifierhttps://arxiv.org/abs/hep-ph/0503061
dc.identifierhttp://arxiv.org/abs/hep-ph/0503061
dc.identifierJHEP0503:067,2005
dc.identifierdoi:10.1088/1126-6708/2005/03/067
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/182528
dc.subjectHigh Energy Physics - Phenomenology
dc.titleTwo-loop QCD gauge coupling at high temperatures
dc.typetext

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