Spin and flavor oscillations of neutrinos in gravitational fields

TL;DR

This paper reviews recent progress in understanding how neutrino spin and flavor oscillations are affected by gravitational fields, including black holes and gravitational waves, with applications to astrophysical neutrinos.

Contribution

It provides new insights into neutrino oscillations in complex gravitational environments, extending previous studies to include stochastic gravitational waves and magnetized black hole surroundings.

Findings

Neutrino spin oscillations occur during gravitational scattering off black holes.

Neutrino flavor oscillations are influenced by stochastic gravitational waves.

Applications to astrophysical neutrino observations are discussed.

Abstract

We summarize our recent achievements in the description of neutrino oscillations in various gravitational fields. After the short review of the previous studies of neutrinos in gravitational fields, we consider the neutrinos propagation and oscillations in two gravitational backgrounds. First, we discuss neutrino spin oscillations in their gravitational scattering off a supermassive black hole surrounded by a thick magnetized accretion disk. Second, we study neutrino flavor oscillations in stochastic gravitational waves. We also consider applications of the obtained results for oscillations of astrophysical neutrinos.