Neutrino oscillations in extended theories of gravity

Understand

We study neutrino oscillations within the framework of extended theories of gravity.

• Based on the covariant reformulation of Pontecorvo formalism, we evaluate the oscillation probability of neutrinos propagating in static spacetimes described by gravitational actions quadratic in the curvature invariants.
• Calculations are carried out in the two-flavor approximation, for oscillations both in vacuum and matter.
• It is shown that the neutrino phase is sensitive to the violation of the strong equivalence principle.