Linear wave spectrum associated with collective neutrino-plasma interactions in the early universe
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The effects of collective neutrino-plasma interactions on the linear wave spectrum supported by a magnetized electron-positron plasma in the presence of a neutrino-antineutrino medium are investigated. When a pair-symmetric background neutrino-plasma medium is perturbed by space-charge waves (electrostatic waves associated with electron-positron charge separation), our analysis shows that the neutrino and antineutrino fluids also separate and the pair symmetry of the background medium is broken. The cosmological implications of this pair-symmetry breaking mechanism are briefly discussed.
17 pages, revised version with corrections, to appear in New Journal of Physics
17 pages, revised version with corrections, to appear in New Journal of Physics