Natural Neutrino Dark Energy

TL;DR

This paper introduces a new class of neutrino dark energy models that align with the standard model, predicting specific effects on cosmic evolution and structure formation, testable by future experiments.

Contribution

It proposes neutrino dark energy models without exotic particles or couplings, providing concrete predictions for dark energy behavior and cosmic structure effects.

Findings

Constraints from big bang nucleosynthesis limit neutrino masses.

Models predict specific dark energy equation of state signatures.

Potential for future experiments to verify these predictions.

Abstract

A new class of neutrino dark energy models is presented. The new models are characterized by the lack of exotic particles or couplings that violate the standard model symmetry. It is shown that these models lead to several concrete predictions for the dark energy equation of state, as well as possible effects on the cosmic structure formation. These predictions, can be verified (or disproved) with future experiments. At this point, the strongest constraints on these models are obtained from big bang nucleosynthesis, and lead to new bounds on the mass of the lightest neutrino.