Inflationary Cosmology and Superluminal Neutrinos
  We show that in the presence of a distance dependent Lorentz-violating time-like background one may find superluminal neutrinos at some high energy such as OPERA's scale. The similar behavior but approaching the subluminal branch is found to appear for inflaton field in the low energy scale. Thus this scenario seems to be suitable to acomplish both superluminal neutrinos and dark energy. 
C. A. G. Almeida, M. A. Anacleto, F. A. Brito, E. Passos
hep-ph