Simplified calculation of boundary S matrices

Anastasia Doikou, Luca Mezincescu, Rafael I. Nepomechie

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


The antiferromagnetic Heisenberg spin chain with N spins has a sector with N=odd, in which the number of excitations is odd. In particular, there is a state with a single one-particle excitation. We exploit this fact to give a simplified derivation of the boundary S matrix for the open antiferromagnetic spin-1/2 Heisenberg spin chain with diagonal boundary magnetic fields.
Original languageEnglish
JournalJournal of Physics A: Mathematical and General
Issue number15
Publication statusPublished - 7 Aug 1997


  • hep-th
  • nlin.SI
  • solv-int


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