Ponderomotive force of quasi-particles in a plasma

Details Ponderomotive force of quasi-particles in a plasma Ponderomotive force of quasi-particles in a plasma

1998-07-28

arxiv.org/abs/physics/9807049v2

Physics

Plasma Physics

10 pages, minor changes, final version to appear in Phys.Rev. E (Feb '99)

Scientific paper

10.1103/PhysRevE.59.2273

We derive the force exerted in the background plasma by an arbitrary distribution of non interacting quasi-particles, corresponding to either collective excitations of the plasma (plasmons, phonons) or em dressed particles (photons, neutrinos). Our approach is based on the effective Hamiltonian describing the quasi-classical dynamics of the individual particles in the presence of a background medium. We recover the usual results for the relativistic ponderomotive force of a photon gas, and we derive the force, due to weak interactions, exerted by the electron-neutrinos in a background medium containing electrons, positrons and neutrons with arbitrary distribution functions. Generalization to other background species and other neutrino flavors is also discussed.

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