Neutrino oscillations in gravitational and cosmological backgrounds

Abstract

We use the eikonal approximation in order to calculate the additional phase shift between two neutrino mass eigenstates during their propagation in a background of gravitational wave or scalar perturbations in the flat and the FRW spacetime metric. We comment on the dependence of the results on the characteristics of the perturbations, give some order-of-magnitude estimates, and find that, although small, the resulting phase difference persists for large redshifts, up to the validity of our approximations.

15 pages, 1 figure, accepted in Gen. Rel. Grav

References in corpus (6)

• Neutrino Flavor States and the Quantum Theory of Neutrino Oscillations
• Neutrino spin oscillations in external fields in curved spacetime
• Nonlocal gravity with worldline inversion symmetry
• Signature of neutrino mass hierarchy in gravitational lensing
• Spin oscillations of neutrinos scattered off a rotating black hole
• Observations of high energy neutrinos with water/ice neutrino telescopes

Cited by in corpus (14)

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• Effects of gravitational lensing on neutrino oscillation in $\gamma$-spacetime
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• Interaction of supernova neutrinos with stochastic gravitational waves
• Influence of a Kalb-Ramond black hole on neutrino behavior
• Neutrino flavor oscillations in a rotating spacetime
• Aspects of gravitational decoherence in neutrino lensing
• Wave packet treatment of neutrino flavor oscillations in various spacetimes
• Flavor ratios of astrophysical neutrinos interacting with stochastic gravitational waves having arbitrary spectra
• Impact of hypermagnetic fields on relic gravitational waves, neutrino oscillations and baryon asymmetry
• The neutrino flavor oscillations in the static and spherically symmetric black-hole-like wormholes
• Effects of bumblebee gravity on neutrino motion
• A comment on lepton mixing
• Spin and flavor oscillations of neutrinos in gravitational fields