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We study the interaction, in general curved spacetime, between a spinor and ascalar field describing dark energy; the so-called DE$_{\nu}$ model in curvedspace. The dominant term is the dimension 5 operator, which results indifferent energy shifts for the neutrino states: an Aharonov-Bohm-like effect.We study the phenomenology of this term and make observational predictions todetect dark energy interactions in the laboratory due to its effect on neutrinooscillation experiments, which opens up the possibility of designingunderground experiments to detect dark energy. This dimension 5 operator beyondthe Standard Model interaction is less suppressed than the widely discusseddimension 6 operator, which corresponds to mass varying neutrinos; thedimension 5 operator does not suffer from gravitational instabilities.

Spinors and Scalars in curved spacetime: neutrino dark energy (DE$_{\nu}$)