Fabricius K., McCoy B.M. — Bethe’s Equation Is Incomplete for the XXZ Model at Roots of Unity
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Название: Bethe’s Equation Is Incomplete for the XXZ Model at Roots of Unity
Авторы: Fabricius K., McCoy B.M.
Аннотация:
Journal of Statistical Physics, Vol. 103, Nos. 5/6, 2001. p. 647-678.
We demonstrate for the six vertex and XXZ model parameterized by D=−(q+q^−1)/2 not equal to ± 1 that when q^2N=1 for integer N >/ 2 the Bethe’s ansatz equations determine only the eigenvectors which are the highest weights of the infinite dimensional sl2 loop algebra symmetry group of the model...
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