Cosmological Unification, Dark Energy and the Origin of Neutrino Mass

Abstract

We suggest that quintessential vacuum energy could be the source of right handed neutrino masses that feed the seesaw mechanism, which may provide observed small masses to light standard neutrinos. This idea is naturally implemented in the Cosmological Unification model based on the global $SO(1,1)$ symmetry, where early inflation and late accelerated expansion of the Universe are driven by the degrees of freedom of a doublet scalar field. In this model, the $SO(1,1)$ custodial symmetry naturally provides the quintessence to standard model singlet fermion couplings that source neutrino masses. We also show that the model predicts a highly suppressed contribution to relativistic degrees of freedom from quintessential quanta at any late Universe epoch, ensuring the consistency of the model.

Added references, new section added extending the theory, new figure, results unchanged/improved

References in corpus (8)

• Dynamics of dark energy
• Cosmology and the Fate of Dilatation Symmetry
• The DESI Experiment Part I: Science,Targeting, and Survey Design
• Constraints on the sum of the neutrino masses in dynamical dark energy models with $w(z)\ge -1$ are tighter than those obtained in $\Lambda$CDM
• Adiabatic instability in coupled dark energy-dark matter models
• Cosmic acceleration and de Sitter expansion in hybrid mass varying neutrino model
• Unification of cosmological scalar fields
• Neutrino Masses from Outer Space

Cited by in corpus (4)

• Damped Neutrino Oscillations in a Conformal Coupling Model
• Screening models and neutrino oscillations
• Chameleon-neutrino conformal coupling and MSW-mediated solar neutrino deficit
• Imprints of vector field non-standard couplings on solar neutrino flux