Noh, Jae Dong; Lee, Deok-Sun; Kim, Doochul - In: Physica A: Statistical Mechanics and its Applications 287 (2000) 1, pp. 167-176
We investigate symmetry properties of the Bethe ansatz wave functions for the Heisenberg XXZ spin chain. The XXZ Hamiltonian commutes simultaneously with the shift operator T and the lattice inversion operator V in the space of Ω=±1 with Ω the eigenvalue of T. We show that the Bethe ansatz...