The pressure of QED from the two-loop 2PI effective action

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dc.creatorBorsanyi, Szabolcs
dc.creatorReinosa, Urko
dc.date2007-09-14
dc.date.accessioned2026-07-07T11:37:12Z
dc.date.available2026-07-07T11:37:12Z
dc.descriptionWe compute the pressure of hot quantum electrodynamics from the two-loop truncation of the 2PI effective action. Since the 2PI resummation guarantees gauge-fixing independence only up to the order of the truncation, our result for the pressure presents a gauge dependent contribution of O(e^4). We numerically characterize the credibility of this gauge-dependent calculation and find that the uncertainty due to gauge parameter dependence is under control for xi<1. Our calculation also suggests that the choice of Landau gauge may minimize gauge-dependent effects.
dc.description15 latex pages with 3 figures
dc.identifierhttps://arxiv.org/abs/0709.2316
dc.identifierhttp://arxiv.org/abs/0709.2316
dc.identifierPhys.Lett.B661:88-94,2008
dc.identifierdoi:10.1016/j.physletb.2008.02.011
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/199125
dc.subjectHigh Energy Physics - Phenomenology
dc.titleThe pressure of QED from the two-loop 2PI effective action
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