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arXiv · hep-ph/9611415

Damping rates of hard momentum particles in a cold ultrarelativistic plasma

Benoit Vanderheyden·Jean-Yves Ollitrault
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Abstract

We compute the damping rates of one-particle excitations in a cold ultrarelativistic plasma to leading order in the coupling constant e for three types of interaction: Yukawa coupling to a massless scalar boson, QED and QCD. Damping rates of charged particles in QED and QCD are of order e^3 mu, while damping rates of other particles are of order e^4 mu or e^4 mu log(1/e). We find that the damping rate of an electron or of a quark is constant far from the Fermi surface, and decreases linearly with the excitation energy close to the Fermi surface. This unusual behavior is attributed to the long-range magnetic interactions.

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Benoit Vanderheyden, Jean-Yves Ollitrault. 1997-03-25. Damping rates of hard momentum particles in a cold ultrarelativistic plasma. https://doi.org/10.1103/physrevd.56.5108

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