2017/05/31 by Ujjal Kumar Dey, Tirtha Sankar Ray, Utpal Sarkar · 3 citations
Physics and Astronomy · #Astrophysics #Cosmology #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark energy #Dark matter #Dirac fermion #Fermion #Neutrino #Neutrino oscillation #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Scalar (mathematics) #Seesaw mechanism #Seesaw molecular geometry #Standard Model (mathematical formulation) #Sterile neutrino #astro-ph.CO #hep-ph
paper · pdf · doi:10.1016/j.nuclphysb.2017.12.005
published in Nuclear Physics B 928, 258-267 (Elsevier BV) · 12 pages, 2 figures, 2 tables; new clarifications and discussions are added; updated reference list; matches published version
openalex publication_date 2017/12/07 · arxiv created 2018/03/07 · arxiv updated 2018/03/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We consider an extension of the Standard Model that provide an unified description of eV scale neutrino mass and dark energy. An explicit model is presented by augmenting the Standard Model with an SU(2)L doublet scalar, a singlet scalar and right handed neutrinos where all of them are assumed to be charged under a global U(1)X symmetry. A light pseudo-Nambu–Goldstone Boson, associated with the spontaneously broken U(1)X symmetry, acts as a mediator of an attractive force leading to a Dirac neutrino condensate, with large correlation length, and a non-zero gap in the right range providing a cosmologically feasible dark energy scenario. The neutrino mass is generated through the usual Dirac seesaw mechanism. Parameter space, reproducing viable dark energy scenario while having neutrino mass in the right ballpark, is presented.