Publication : t96/133
Damping rates of hard momentum particles in a cold ultrarelativistic plasma
Vanderheyden B. (Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, IL 61801-3080 USA)Ollitrault J.-Y. (CEA, DSM, SPhT (Service de Physique Théorique), F-91191 Gif-sur-Yvette, FRANCE)
Abstract:Année de publication : 1997
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 are of order $e^3\mu$, $e^4\mu$ or $e^4\mu\log(1/e)$. In particular, we find that the damping rate of an electron or of a quark is constant far from the Fermi surface, while it decreases linearly with the excitation energy close to the Fermi surface due to the long--range magnetic interaction.
Revue : Phys. Rev. D 56 5108-5122 (1997)
DOI : 10.1103/PhysRevD.56.5108
Preprint : arXiv:hep-ph/9611415
Lien : http://link.aps.org/abstract/PRD/v56/p5108
Langue : Anglais
Fichier(s) à télécharger :
publi.pdf
