Superluminal motion and Lorentzian symmetry breaking and repairing in   two-metric theories
  The new results by OPERA collaboration claim the discovery of superluminal neutrinos. Superluminal particles have to break Lorentzian symmetry or causality principle. The method discussed gives us the possibility to reintroduce Lorentzian symmetry without breaking of causality. 
Mikhail G. Ivanov
hep-ph