DM3 - Sterile neutrinos and cosmology |
|
Speaker |
Lattanzi, Massimiliano |
|
Coauthors |
Forastieri, Francesco; Lattanzi, Massimiliano; Natoli, Paolo |
| Talk Title |
Cosmological Constraints On Majoron-Neutrino Interactions |
|
Abstract |
Neutrino masses can be produced from the spontaneous violation of an ungauged lepton number symmetry. In this case, a Nambu-Goldstone boson, the Majoron, appears. The Majoron could mediate non-standard interactions between neutrinos that would affect the evolution of perturbations in the neutrino fluid. In my talk I will show how cosmological observations, especially those of the anisotropies of the cosmic microwave background made by the Planck satellite, can be used to constrain the Majoron-neutrino coupling. In possible, I will also discuss the impact of other astrophysical observations, like those of SN1987A, on these constraints. |
|
Talk view |
|
|
|
|