Dias, A. G.Pleitez, V2014-05-202014-05-202006-01-01Physical Review D. College Pk: American Physical Soc, v. 73, n. 1, 4 p., 2006.1550-7998http://hdl.handle.net/11449/23972We show that in any invisible axion model due to the effects of effective nonrenormalizable interactions related to an energy scale near the Peccei-Quinn, grand unification or even the Planck scale, active neutrinos necessarily acquire masses in the sub-eV range. Moreover, if sterile neutrinos are also included and if appropriate cyclic Z(N) symmetries are imposed, it is possible that some of these neutrinos are heavy while others are light.4engArtigo10.1103/PhysRevD.73.017701WOS:000235009900092Acesso abertoWOS000235009900092.pdf67834333902357270000-0001-5279-8438