title: Neutrino Oscillations as a Probe of Light Scalar Dark Matter.
abstract: We consider a class of models involving interactions between ultralight scalar dark matter and standard model neutrinos. Such couplings modify the neutrino mass splittings and mixing angles to include additional components that vary in time periodically with a frequency and amplitude set by the mass and energy density of the dark matter. Null results from recent searches for anomalous periodicities in the solar neutrino flux strongly constrain the dark matter-neutrino coupling to be orders of magnitude below current and projected limits derived from observations of the cosmic microwave background.
authors.affiliation: Department of Physics, Enrico Fermi Institute, University of Chicago, Chicago 60637-1433, Illinois, USA.
authors.forename: Asher
authors.initials: A
authors.lastname: Berlin