Cosmological Signatures of the Interaction between Dark-Energy and Massive Neutrinos

Understand

We investigate whether interaction between massive neutrinos and quintessence scalar field is the origin of the late time accelerated expansion of the universe.

• We present cosmological perturbation theory in neutrinos probe interacting dark-energy models, and calculate cosmic microwave background anisotropies and matter power spectrum.
• In these models, the evolution of the mass of neutrinos is determined by the quintessence scalar field, which is responsible for the cosmic acceleration today.
• We consider several types of scalar field potentials and put constraints on the coupling parameter between neutrinos and dark energy.