3-states Potts model

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introduction==     ferromagnetic three-state Potts spin chain
  • [DKMM93]
       
conformal field theory==
  • discrete series unitary representations and GKO coset construction
    \(m= 5\)
    \(c = \frac{4}{5}\)
    \(h_{r,s}(c) = {((m+1)r-ms)^2-1 \over 4m(m+1)}\)
    \(r = 1, 2, 3,4\) and \(s= 1, 2, 3,\cdots, r\) i.e. \(1\leq s\leq r< 5\)
    ( or \(1\leq r< s\leq m\) condition is also used)
  • 10 irreducible representations
  • conformal dimensions
    \(\Delta_{r,s}^{(p,p')}=h_{r,s}^{(p,p')}=\frac{(p'r-ps)^2-(p'-p)^2}{4pp'}\)
    \(1\leq r \leq p-1\) and \(1\leq s \leq p'-1\)
    note that \(\Delta_{r,s}^{(p,p')}=\Delta_{p-r,p'-s}^{(p,p')}\)
    r=1,2,3,4 s=1,2,3,4,5
   
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