Limits on neutrino-neutrino scattering in the early Universe

@inproceedings{CyrRacine2013LimitsON,
  title={Limits on neutrino-neutrino scattering in the early Universe},
  author={Francis-Yan Cyr-Racine and Kris Sigurdson},
  year={2013}
}
In the standard model neutrinos are assumed to have streamed across the Universe since they last scattered at the weak decoupling epoch when the temperature of the standard-model plasma was ∼MeV. The shear stress of free-streaming neutrinos imprints itself gravitationally on the Cosmic Microwave Background (CMB) and makes the CMB a sensitive probe of… CONTINUE READING