Non-diagonal solutions to reflection equations in $su(n)$ spin chains

Abstract

The reflection equations in a $su(3)$ spin chain with open boundary conditions are analyzed. We find non diagonal solutions to the boundary matrices. The corresponding hamiltonian is given. The solutions are generalized to $su(n)$.

9 pages, PlainTex , two figures uuencoded, Harvmac.

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• Boundary S-Matrix and Boundary State in Two-Dimensional Integrable Quantum Field Theory
• Boundary K-matrices for the XYZ, XXZ AND XXX spin chains
• Integrable XYZ Spin Chain with Boundaries
• Boundary K-matrix for the quantum Mikhailov-Shabat model

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