The Bound State S-matrix of the Deformed Hubbard Chain
  In this work we use the q-oscillator formalism to construct the atypical (short) supersymmetric representations of the centrally extended Uq (su(2|2)) algebra. We then determine the S-matrix describing the scattering of arbitrary bound states. The crucial ingredient in this derivation is the affine extension of the aforementioned algebra. 
Marius de Leeuw, Takuya Matsumoto, Vidas Regelskis
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