Key points are not available for this paper at this time.
Bethe's hypothesis is proved for the ground state of a one-dimensional cyclic chain of anisotropic nearest-neighbor spin-spin interactions. The proof holds for any fixed number of down spins.Received 8 April 1966DOI:https://doi.org/10.1103/PhysRev.150.321©1966 American Physical Society
Yang et al. (1966) studied this question.