A quantum affine algebra for the deformed Hubbard chain

  title={A quantum affine algebra for the deformed Hubbard chain},
  author={Niklas Beisert and Wellington Gall{\'e}as and Takuya Matsumoto},
  journal={Journal of Physics A},
The integrable structure of the one-dimensional Hubbard model is based on Shastry's R-matrix and the Yangian of a centrally extended superalgebra. Alcaraz and Bariev have shown that the model admits an integrable deformation whose R-matrix has recently been found. This R-matrix is of trigonometric type and here we derive its underlying exceptional quantum affine algebra. We also show how the algebra reduces to the above-mentioned Yangian and to the conventional quantum affine algebra in two… Expand

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