Damping Rate of Quasiparticles in Degenerate Ultrarelativistic Plasmas

Details Damping Rate of Quasiparticles in Degenerate Ultrarelativistic Plasmas Damping Rate of Quasiparticles in Degenerate Ultrarelativistic Plasmas

1996-09-17

arxiv.org/abs/hep-ph/9609369v1

Phys.Rev. D55 (1997) 3215-3218

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, RevTex, 1 figure

Scientific paper

10.1103/PhysRevD.55.3215

We compute the damping rate of a fermion in a dense relativistic plasma at zero temperature. Just above the Fermi sea, the damping rate is dominated by the exchange of soft magnetic photons (or gluons in QCD) and is proportional to $(E-\mu)$, where E is the fermion energy and $\mu$ the chemical potential. We also compute the contribution of soft electric photons and of hard photons. As in the nonrelativistic case, the contribution of longitudinal photons is proportional to $(E-\mu)^2$, and is thus non leading in the relativistic case.

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