Neutrino Oscillations in Strong Gravitational Fields
  Neutrinos do oscillate, which up to our best knowledge implies that they are massive particles. As such, neutrinos should interact with gravitational fields. As their masses are tiny, the gravitational fields must be extremely strong. In this paper we study the influence of black holes described by non-trivial topologies on the neutrino oscillations. We present approximate analytical and numerical solutions of certain specific cases. 
Marek G\'o\'zd\'z and Marek Rogatko
hep-ph