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Elsevier, Nuclear Physics B, 3(798), p. 402-422, 2008
DOI: 10.1016/j.nuclphysb.2007.12.026
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The QCD spin chain S matrix
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Abstract
Beisert et al. have identified an integrable SU(2,2) quantum spin chain which gives the one-loop anomalous dimensions of certain operators in large Nc QCD. We derive a set of nonlinear integral equations (NLIEs) for this model, and compute the scattering matrix of the various (in particular, magnon) excitations.