Mass varying neutrinos, symmetry breaking, and cosmic acceleration

Abstract

We introduce a new proposal for the onset of cosmic acceleration based on mass-varying neutrinos. When massive neutrinos become nonrelativistic, the $Z_2$ symmetry breaks, and the quintessence potential becomes positive from its initially zero value. This positive potential behaves like a cosmological constant at the present era and drives the Universe's acceleration during the slow roll evolution of the quintessence. In contrast to $\Lambda$CDM model, the dark energy in our model is dynamical, and the acceleration is not persistent. Contrary to some of the previous models of dark energy with mass-varying neutrinos, we do not use the adiabaticity condition which leads to instability.

24 pages, 7 figures, typos fixed, accepted by Physical Review D

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• Damped Neutrino Oscillations in a Conformal Coupling Model
• Spontaneous symmetry breaking in the late Universe and glimpses of early Universe phase transitions à la baryogenesis
• Early dark energy and the screening mechanism
• A new take on the inflationary quintessence
• Mass varying neutrinos with different quintessence potentials
• Symmetry breaking, and the effect of matter density on neutrino oscillation
• Obtaining a scalar fifth force via a broken-symmetry couple between the scalar field and matter
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• Plane-wave and wavepacket neutrino flavor oscillations in vacuum in conformal coupling models
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• Screening models and neutrino oscillations
• Cosmological Unification, Dark Energy and the Origin of Neutrino Mass
• Observational constraints on the massive neutrinos induced late-time cosmic acceleration
• Theoretical Investigation of Subluminal Particles Endowed with Imaginary Mass
• Neutrino flavor oscillations inside matter in conformal coupling models
• Production of Tachyonic Neutrino in Matter
• Imprints of vector field non-standard couplings on solar neutrino flux
• Probing Primordial Symmetry Breaking with Cosmic Microwave Background Anisotropy
• Mass Varying Neutrino Oscillation in Scalar-Gauss-Bonnet Gravity
• Saving CNB assisted EDE model at the expense of quantum corrections?