The role of degeneracy in the analogy between continuous variable and   spin 1/2 systems
  We point out limitations to the analogy between the continuous variable and spin 1/2 systems and show that the maximal violation of Bell inequality is related to an infinite degeneracy. We quantify non-maximal violation of the Bell-CHSH inequality and comment potential experimental implications of our work. 
J.L. Lucio M.