Damping rates for moving particles in hot QCD

Details Damping rates for moving particles in hot QCD Damping rates for moving particles in hot QCD

1993-02-09

arxiv.org/abs/hep-ph/9302242v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX file, 24 pages, BNL-P-1/92 (December, 1992)

Scientific paper

10.1103/PhysRevD.47.5589

Using a program of perturbative resummation I compute the damping rates for fields at nonzero spatial momentum to leading order in weak coupling in hot $QCD$. Sum rules for spectral densities are used to simplify the calculations. For massless fields the damping rate has an apparent logarithmic divergence in the infrared limit, which is cut off by the screening of static magnetic fields (``magnetic mass''). This demonstrates how at high temperature even perturbative quantities are sensitive to nonperturbative phenomenon.

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