Damping rates of hard momentum particles in a cold ultrarelativistic plasma
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States)
- Service de Physique Theorique, CE-Saclay, 91191 Gif-sur-Yvette cedex (France)
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{sup 3}{mu}, while the damping rates of other particles are of order e{sup 4}{mu} or e{sup 4}{mu}thinsp 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. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 632705
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 8 Vol. 56; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
Similar Records
Calculation of the quark damping rate in hot QCD
Fermion damping in a fermion-scalar plasma