Neutrino spin oscillations in curved space-time under the influence of external fields

TL;DR

This paper investigates how neutrino spins evolve in curved space-time near black holes, considering electromagnetic and gravitational influences, with potential implications for astrophysical neutrino observations.

Contribution

It derives an effective Hamiltonian for neutrino spin oscillations in curved space-time with external fields, specifically near black holes and accretion disks.

Findings

Derived the effective Hamiltonian for neutrino spin oscillations in curved space-time.

Analyzed neutrino spin behavior near black holes with magnetic fields.

Discussed implications for astrophysical neutrino detection.

Abstract

We study neutrino spin oscillations in background matter under the influence of strong electromagnetic and gravitational fields. The neutrino spin evolution is treated quasiclassically. We derive the effective Hamiltonian governing spin oscillations of a neutrino moving in the vicinity of a black hole and interacting with a relativistic magnetized accretion disk around a black hole. Applications for the studies of spin oscillations of astrophysical neutrinos are considered.