Cosmology of an Axion-Like Majoron

Antonio J. Cuesta, Mario E. Gómez, José I. Illana +1

We propose a singlet majoron model that defines an inverse seesaw mechanism in the $\nu$ sector. The majoron $\varphi$ has a mass $m_{\varphi }\approx 0.5$ eV and a coupling to the $\tau$ lepton simil…