Direct calculation of the boundary S-matrix for the open Heisenberg chain

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We calculate the boundary S-matrix for the open antiferromagnetic spin- 1/2 isotropic Heisenberg chain with boundary magnetic fields. Our approach, which starts from the model's Bethe-ansatz solution, is an extension of the Korepin-Andrei-Destri method. Our result agrees with the boundary S-matrix for the boundary sine-Gordon model with beta 2 to 8 pi and with 'fixed' boundary conditions.

Original languageEnglish (US)
Article number025
Pages (from-to)1027-1045
Number of pages19
JournalJournal of Physics A: General Physics
Issue number4
StatePublished - Dec 1 1995


ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Physics and Astronomy(all)
  • Mathematical Physics

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