Non-Abelian symmetries of the half-infinite XXZ spin chain
Baseilhac, Pascal · Belliard, Samuel
Original · EN
The non-Abelian symmetries of the half-infinite XXZ spin chain for all possible types of integrable boundary conditions are classified. For each type of boundary conditions, an analog of the Chevalley-type presentation is given for the corresponding symmetry algebra. In particular, two new algebras arise that are, respectively, generated by the symmetry operators of the model with triangular and special Uq(gl₂)-invariant integrable boundary conditions.
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