Quasiparticles in ultrarelativistic plasmas

1996
10 pages
Published in:
  • Nucl.Phys.A 606 (1996) 347-356

Citations per year

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Abstract: (Elsevier)
In ultrarelativistic plasmas, the existence of unscreened magnetic interactions and the presence of massless particles strongly affect the properties of the quasiparticles and of the collective modes. In this note, I discuss the peculiar splitting of the fermion dispersion relation at low momentum, which exhibits features of a collective phenomenon. I then show how the unscreened soft magnetic interactions affect the lifetime of quasiparticles.
  • plasma: relativistic
  • plasma: excited state
  • collective phenomena
  • fermion: energy spectrum
  • energy spectrum: fermion
  • model: pseudoparticle
  • lifetime: pseudoparticle
  • scattering: magnetic
  • magnetic: scattering