Bound States, Yangian Symmetry and Classical r-matrix for the AdS5 x S5 Superstring - High Energy Physics - TheoryReport as inadecuate




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Abstract: We show that the recently found S-matrices describing the scattering oftwo-particle bound states of the light-cone string sigma model on AdS5 x S5 arecompatible with Yangian symmetry. In case the invariance with respect to thecentrally extended su2|2 algebra is not sufficient to fully specify thescattering matrix, the requirement of Yangian symmetry provides an alternativeto the Yang-Baxter equation and leads to a complete, up to an overall phase,determination of the S-matrix. We then compare the semi-classical limit of thebound state S-matrices with the universal classical r-matrix by Beisert andSpill evaluated in the corresponding bound state representations and findperfect agreement.



Author: M de Leeuw

Source: https://arxiv.org/







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