Boundary K-matrices and the Lax pair for 1D open XYZ spin-chain

Abstract

We analysis the symmetries of the reflection equation for open $XYZ$ model and find their solutions $K^{\pm}$ case by case. In the general open boundary conditions, the Lax pair for open one-dimensional $XYZ$ spin-chain is given.

LaTeX, 17 pages, errors in references corrected