2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/138538Whereas the tools to determine the eigenvalues of the eight-vertex transfer matrix T are well known there has been until recently incomplete knowledge about the eigenvectors of T. We describe the construction of eigenvectors of T corresponding to degenerate eigenvalues and discuss the related hidden elliptic symmetry.11 pagesStatistical MechanicsHigh Energy Physics - Theorytext