Revisiting the Y = 0 open spin chain at one loop

Rafael I. Nepomechie

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


In 2005, Berenstein and Vázquez determined an open spin chain Hamiltonian describing the one-loop anomalous dimensions of determinant-like operators corresponding to open strings attached to Y = 0 maximal giant gravitons. We construct the transfer matrix (generating functional of conserved quantities) containing this Hamiltonian, thereby directly proving its integrability. We find the eigenvalues of this transfer matrix and the corresponding Bethe equations, which we compare with proposed all-loop Bethe equations. We note that the Bethe ansatz solution has a certain “gauge” freedom, and is not completely unique.

Original languageEnglish (US)
Article number69
JournalJournal of High Energy Physics
Issue number11
StatePublished - 2011


  • AdS-CFT correspondence
  • Bethe ansatz
  • Boundary quantum field theory
  • Lattice integrable models

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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