  We consider a model in which the neutrino is kinetically coupled to a scalar
field and study its implications for environmentally dependent neutrino
velocities. Following the usual effective field theory logic, this coupling is
expected to arise in neutrino dark energy models. It leads to a Lorentz
violation in the neutrino sector. The coupling of the scalar field to the
stress tensor of the Earth yields terrestrial neutrino dispersion relations
distinct from those in interstellar space.
