Neutrino Oscillations form Cosmic Sources: a Nu Window to Cosmology

Understand

In this essay we extend the standard discussion of neutrino oscillations to astrophysical neutrinos propagating through expanding space.

• This extension introduces a new cosmological parameter $I$ into the oscillation phase.
• The new parameter records cosmic history in much the same manner as the redshift z or the apparent luminosity D_L.
• Measuring $I$ through neutrino oscillations could help determine cosmological parameters and discriminate among different cosmologies.