The QCD spin chain S matrix
Changrim Ahn, Rafael I. Nepomechie, Junji Suzuki
TL;DR
This paper derives nonlinear integral equations for an integrable SU(2,2) quantum spin chain related to large N QCD and computes its scattering matrix, including magnon excitations.
Contribution
It introduces a set of NLIEs for the QCD spin chain and calculates the scattering matrix, advancing understanding of integrable models in gauge theories.
Findings
Derived NLIEs for the SU(2,2) spin chain
Computed the scattering matrix for excitations
Analyzed magnon scattering in the model
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 N 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.
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