Suppression of cosmological sterile neutrino production by altered dispersion relations

Jun 21, 2016
7 pages
Published in:
  • Phys.Rev.D 94 (2016) 11, 113010
  • Published: Dec 19, 2016
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Abstract: (APS)
Early Universe cosmology imposes stringent bounds on light sterile neutrinos mixing with the active flavors. Here we discuss how altered dispersion relations can weaken such bounds and allow compatibility of new sterile neutrino degrees of freedom with early Universe cosmology and particular a successful generation of the light elements in the early Universe.
Note:
  • 15 pages, 7 figures
  • 14.60.St
  • neutrino: sterile
  • nucleosynthesis: big bang
  • neutrino: mixing
  • neutrino: mixing angle
  • neutrino: mass
  • neutrino: mass difference
  • dispersion relation
  • numerical calculations
  • new physics