Neutrino optics and oscillations in gravitational fields
  We study the propagation of neutrinos in gravitational fields using wave functions that are exact to first order in the metric deviation. For illustrative purposes, the geometrical background is represented by the Lense-Thirring metric. We derive explicit expressions for neutrino deflection, helicity transitions, flavor oscillations and oscillation Hamiltonian. 
G. Lambiase, G. Papini, R. Punzi, G. Scarpetta