Scattering matrix of elementary excitations in the antiperiodic XXZ spin chain with η=iπ/3

Pei Sun, Jintao Yang, Yi Qiao +2

We study the thermodynamic limit of the antiperiodic XXZ spin chain with the anisotropic parameter $\eta =\frac{\pi i}{3}$. We parameterize eigenvalues of the transfer matrix by their zer…