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Perturbative Peculiarities of Quantum Field Theories at High Temperatures

Max-Planck-Institut für Kernphysik, Postfach 103980, D-69029 Heidelberg, Germany
University Cote d’Azur, CNRS, INPHYNI, 1361 routes des Lucioles, 06560 Valbonne, France
Institut für Theoretische Physik, Universität Heidelberg, Philosophenweg 16, 69120 Heidelberg, Germany
Institut for Photon Science and Sychrotron Radiation, Karlsruher Institut für Technologie, Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
Author to whom correspondence should be addressed.
Universe 2019, 5(3), 81;
Received: 13 February 2019 / Revised: 6 March 2019 / Accepted: 6 March 2019 / Published: 14 March 2019
(This article belongs to the Special Issue Heavy Ion Collisions)
Revisiting the fast fermion damping rate calculation in a thermalized QED and/or QCD plasma in thermal equilibrium at four-loop order, focus is put on a peculiar perturbative structure which has no equivalent at zero-temperature. Not surprisingly, and in agreement with previous C -algebraic analyses, this structure renders the use of thermal perturbation theory more than questionable. View Full-Text
Keywords: thermal perturbative QCD; damping rates thermal perturbative QCD; damping rates
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Bischer, I.; Grandou, T.; Hofmann, R. Perturbative Peculiarities of Quantum Field Theories at High Temperatures. Universe 2019, 5, 81.

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