text: FIG. 19: The evolution of the optical integrals in the NS 
  and the SCS in the CB model. Note that about 
  75% of 
  the spectral weight is recovered up to 1 eV . We set ωsf = 
  26 meV ,λ = 1, and ∆ = 30 meV . 
  
  ∼ 
  
  FIG. 17: Conductivities and ∆W for a ﬁxed λωsf . Top – 
  ωsf = 26 meV ,λ = 1,ωo = 40 meV ,Zo = 0.77 Bottom – 
  ωsf = 2.6 meV ,λ = 10,ωo = 13.5 meV ,Zo = 1.22. The zero 
  crossing for ∆W is not aﬀected by a change in λ because it 
  is determined only by λωsf . We set ∆ = 30 meV . 
  ∆ W (CB model λ=1) 
  20 
  
  with lattice 
  without lattice 
  
  ) 
  c 
  CB model (Ω 
  =40 meV) 
  o 
  ω 
  ( 
  
  S 
  N 
  W 
  − 
  ) 
  0  200 
  
  SCS 
  NS 
  c 
  ω 
  ( 
  
  C 
  S 
  W 
  ) 
  −20 
  V 
  e 
  m 
  160 
  ( 
  
  K 
  W 
  0 
  0.5 
   in eV 
  1 
  ω 
  c 
  120 
  ∆ W (CB model λ=10) 
  
  with lattice 
  without lattice 
  20 
  ) 
  c 
  ω 
  ( 
  
  S 
  N 
  W 
  − 
  )  0 
  c 
  ω 
  ( 
  
  C 
  S 
  W 
  −20 