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Perturbative Peculiarities of Quantum Field Theories at High Temperatures

1
Max-Planck-Institut für Kernphysik, Postfach 103980, D-69029 Heidelberg, Germany
2
University Cote d’Azur, CNRS, INPHYNI, 1361 routes des Lucioles, 06560 Valbonne, France
3
Institut für Theoretische Physik, Universität Heidelberg, Philosophenweg 16, 69120 Heidelberg, Germany
4
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; https://doi.org/10.3390/universe5030081
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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