Cosmic acceleration and de Sitter expansion in hybrid mass varying neutrino model

Abstract

A nonminimally coupled hybrid dark energy model is introduced. The dark energy evolution is triggered by mass varying neutrinos. Quintessence evolution begins from an initial point, with an insignificant dark energy density, and arrives at a final de Sitter attractor. While initially, for a Higgs-like potential, the non-minimal coupling keeps the system in a state with negligible dark energy density, finally the second quintessence conducts the evolution to a stable fixed point. These evolutions occur through successive $Z_2$ symmetry breakings.

arXiv comment19 pages, 6 figures, explanations added

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• Early dark energy and the screening mechanism
• Obtaining a scalar fifth force via a broken-symmetry couple between the scalar field and matter
• Constant-roll, cosmic acceleration, and massive neutrinos
• Plane-wave and wavepacket neutrino flavor oscillations in vacuum in conformal coupling models
• Cosmological Unification, Dark Energy and the Origin of Neutrino Mass
• Screening models and neutrino oscillations
• Avoiding parameter fine-tuning in mass varying neutrino models of DE?
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• Neutrino flavor oscillations inside matter in conformal coupling models
• Mass Varying Neutrino Oscillation in Scalar-Gauss-Bonnet Gravity