text: **(a)**
  1 
  *TN*(8) = 92(2)K 
  
  90K 
  91K 
  92K 
  93K 
  94K 
  95K 
  
  *e*
  *P*
  0.5 
  
  0 
  -140 -139 -138 -137 -136 -135 -134 -133 -132 -131 
  *e*
  **(b)**
  
  129K 
  130K 
  131K 
  132K 
  133K 
  134K 
  
  *TC*(8) = 133.3(3)K 
  0.4 
  *e*
  *P*
  0.2 
  
  0 
  -94  -92  -90  -88 
  -86 
  *e*
  -84  -82  -80  -78 
  
  FIG. 10: (colors online) Equilibrium probability distribution 
  of the energy for the thickness n = 8 for some temperatures 
  around TN (8), (a), and TC(8), (b), respectively. 