On the Hopf algebra structure of the AdS / CFT S-matrix

  title={On the Hopf algebra structure of the AdS / CFT S-matrix},
  author={Jan Plefka},
We formulate the Hopf algebra underlying the su(2|2) worldsheet S-matrix of the AdS 5 × S 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 antiparticle… CONTINUE READING
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