Spin-1/2 XYZ model revisit: general solutions via off-diagonal Bethe ansatz
arXiv:1307.0280 · doi:10.1016/j.nuclphysb.2014.06.026
Abstract
The spin-1/2 XYZ model with both periodic and anti-periodic boundary conditions is studied via the off-diagonal Bethe ansatz method. The exact spectra of the Hamiltonians and the Bethe ansatz equations are derived by constructing the inhomogeneous T-Q relations, which allow us to treat both the even N (the number of lattice sites) and odd N cases simultaneously in an unified approach.
20 pages, 3 tables, published version, numerical check is added