Speaker
Eleonora Di Valentino
(Institut d'Astrophysique de Paris)
Description
In the primordial Universe the axion particles, which solve in an elegant way the CP problem in QCD, can be produced both thermally, contributing to the hot dark matter of the Universe, or not thermally, contributing to the cold dark matter.
I will show the recent constraints from cosmology for the thermal axion mass and the total neutrino mass, using the Planck 2015 temperature and polarization data.
Author
Eleonora Di Valentino
(Institut d'Astrophysique de Paris)
Co-authors
Prof.
Alessandro Melchiorri
(Università 'La Sapienza' di Roma)
Elena Giusarma
(Università 'La Sapienza' di Roma)
Dr
Massimiliano Lattanzi
(Università di Ferrara)
Olga Mena
(IFIC)
joseph silk
(IAP)
