Radiative corrections to the pressure and the one-loop polarization tensor of massless modes in SU(2) Yang-Mills thermodynamics

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dc.creatorSchwarz, Markus
dc.creatorHofmann, Ralf
dc.creatorGiacosa, Francesco
dc.date2006-03-09
dc.date2006-11-27
dc.date.accessioned2026-07-07T10:46:10Z
dc.date.available2026-07-07T10:46:10Z
dc.descriptionWe compute the one-loop polarization tensor $Π$ for the on-shell, massless mode in a thermalized SU(2) Yang-Mills theory being in its deconfining phase. Postulating that SU(2)$_{\tiny{CMB}}\stackrel{\tiny{today}}=U(1)_Y$, we discuss $Π$'s effect on the low-momentum part of the black-body spectrum at temperatures $\sim 2... 4$ $T_{\tiny{CMB}}$ where $T_{\tiny{CMB}}\sim 2.73 $K. A table-top experiment is proposed to test the above postulate. As an application, we point out a possible connection with the stability of dilute, cold, and old innergalactic atomic hydrogen clouds. We also compute the two-loop correction to the pressure arising from the instantaneous massless mode in unitary-Coulomb gauge, which formerly was neglected, and present improved estimates for subdominant corrections.
dc.description25 pages, 17 figs, v4: consequences of a modification of the evolution equation for the effectice coupling implemented, no qualitative change of the physics
dc.identifierhttps://arxiv.org/abs/hep-th/0603078
dc.identifierhttp://arxiv.org/abs/hep-th/0603078
dc.identifierInt.J.Mod.Phys.A22:1213-1238,2007
dc.identifierdoi:10.1142/S0217751X07035227
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/183145
dc.subjectHigh Energy Physics - Theory
dc.titleRadiative corrections to the pressure and the one-loop polarization tensor of massless modes in SU(2) Yang-Mills thermodynamics
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