Achiral boundaries and the twisted Yangian of the D5-brane

@article{Mackay2011AchiralBA,
  title={Achiral boundaries and the twisted Yangian of the D5-brane},
  author={Niall J. Mackay and Vidas Regelskis},
  journal={Journal of High Energy Physics},
  year={2011},
  volume={2011},
  pages={1-22}
}
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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