Superluminal neutrino and spontaneous breaking of Lorentz invariance

  title={Superluminal neutrino and spontaneous breaking of Lorentz invariance},
  author={F. Klinkhamer and G. E. Volovik},
  journal={JETP Letters},
  • F. Klinkhamer, G. E. Volovik
  • Published 2011
  • Physics
  • JETP Letters
  • Generally speaking, the existence of a superluminal neutrino can be attributed either to re-entrant Lorentz violation at ultralow energy from intrinsic Lorentz violation at ultrahigh energy or to spontaneous breaking of fundamental Lorentz invariance (possibly by the formation of a fermionic condensate). Re-entrant Lorentz violation in the neutrino sector has been discussed elsewhere. Here, the focus is on mechanisms of spontaneous symmetry breaking. 
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