Achiral boundaries and the twisted Yangian of the D5-brane

  title={Achiral boundaries and the twisted Yangian of the D5-brane},
  author={N. J. MacKay and Vidas Regelskis},
  journal={Journal of High Energy Physics},
We consider integrable field theories with achiral boundary conditions and uncover the underlying achiral twisted Yangian algebra. This construction arises from old work on the bosonic principal chiral model on a half-line, but finds a modern realization as the hidden symmetry in the planar limit of the scattering of worldsheet excitations of the AdS/CFT light-cone superstring off a D5-brane. 

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