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Analysis of the Bethe Ansatz Equations for the Anisotropic SU(2) Chain

Jul 18, 1988
12 pages
Published in:
  • J.Phys.A 22 (1989) L99
DOI:
Report number:
  • Print-88-0523 (SAO CARLOS)
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Abstract: (IOP)
The Bethe-ansatz equations for the anisotropic spin-S Heisenberg chain are analysed numerically. The position of the roots for the whole spectrum is calculated for the spin-1 model in a chain of width N=4. Some states are presented which violate the normally accepted string hypothesis.
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