Neutrino Oscillations Induced by Chiral Phase Transition in a Compact   Star
  Electric charge neutrality in a compact star provides an important relation- ship between the chiral dynamics and neutrino propagation in the star. Since the sudden drop of the electron density at the critical point of the first-order chiral phase transition, the oscillation for low energy neutrinos is significant and can be regarded as a signature of chiral symmetry restoration in the core of the star. 
Chengfu Mu, Gaofeng Sun and Pengfei Zhuang