text: The negative sign of ∆W (ωc) above a relatively small 
  ωc ∼ 0.1 − 0.2eV implies that the ‘compensating’ ef- 
  fect from the fermionic self-energy on ∆W is not strong 
  enough to overshadow the decrease of the optical inte- 
  gral in the SCS due to gap opening. In other words,the 
  CB model displays the same behavior as BCSI, EB, and 