The S-Matrix of AdS/CFT and Yangian Symmetry
arXiv:0704.0400
Abstract
We review the algebraic construction of the S-matrix of AdS/CFT. We also present its symmetry algebra which turns out to be a Yangian of the centrally extended su(2|2) superalgebra.
12 pages, contributed to the Solvay workshop "Bethe Ansatz: 75 Years Later", v2: references added, v3: wording changed, v4: factor 1/2 for Delta C hat corrected in tab 2 (thanks to F. Spill)