Hopf algebra structure of the AdS/CFT S-matrix

@article{Plefka2006HopfAS,
  title={Hopf algebra structure of the AdS/CFT S-matrix},
  author={Jan Plefka and Fabian Spill and Alessandro Torrielli},
  journal={Physical Review D},
  year={2006},
  volume={74},
  pages={066008}
}
We formulate the Hopf algebra underlying the su(2/2) world sheet S-matrix of the AdS{sub 5}xS{sup 5} string in the AdS/CFT correspondence. For this we extend the previous construction in the su(1/2) subsector due to Janik to the full algebra by specifying the action of the coproduct and the antipode on the remaining generators. The nontriviality of the coproduct is determined by length-changing effects and results in an unusual central braiding. As an application we explicitly determine the… 

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