Higher loop Bethe ansatz for open spin-chains in AdS/CFT

@article{Okamura2006HigherLB,
  title={Higher loop Bethe ansatz for open spin-chains in AdS/CFT},
  author={Keisuke Okamura and Kentaroh Yoshida},
  journal={Journal of High Energy Physics},
  year={2006},
  volume={2006},
  pages={081-081}
}
We propose a perturbative asymptotic Bethe ansatz (PABA) for open spin-chain systems whose Hamiltonians are given by matrices of anomalous dimension for composite operators, and apply it to two types of composite operators related to two different brane configurations. One is an AdS4 ? S2-brane in the bulk AdS5 ? S5 which gives rise to a defect conformal field theory (dCFT) in the dual field theory, and the other is a giant graviton system with an open string excitation. In both cases… 

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