Exact spectrum of the XXZ open spin chain from the q−Onsager algebra representation theory

  • Pascal Baseilhac, Kozo Koizumi
  • Published 2007


The transfer matrix of the XXZ open spin1 2 chain with general integrable boundary conditions and generic anisotropy parameter (q is not a root of unity and |q| = 1) is diagonalized using the representation theory of the q−Onsager algebra. Similarly to the Ising and superintegrable chiral Potts models, the complete spectrum is expressed in terms of the… (More)


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