Quantum Metal--Superconductor Transition: A Local Field Theory Approach
  The zero temperature, or quantum, metal-superconductor phase transition is studied in disordered systems in dimension greater than two. A effective local field theory is developed that keeps all soft modes or fluctuations explicitly. A simple renormalization group analysis is used to exactly determine the quantum critical behavior at this transition. 
Lubo Zhou, T.R. Kirkpatrick