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Angular intricacies in hot gauge field theories

Thierry Grandou
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Abstract

It is argued that in hot gauge field theories, "Hard Thermal Loops" leading order calculations call for a definite sequence of angular averages and discontinuity (or Imaginary part prescription) operations, and run otherwise into incorrect results. The ten years old collinear singularity problem of hot $QCD$, provides a striking illustration of that fate.

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Thierry Grandou. 2003-04-02. Angular intricacies in hot gauge field theories. https://doi.org/10.1063/1.1814418

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