Direct calculation of breather S matrices

Anastasia Doikou, Rafael I. Nepomechie

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


We formulate a systematic Bethe ansatz approach for computing bound-state ('breather') S matrices for integrable quantum spin chains. We use this approach to calculate the breather boundary S matrix for the open X X Z spin chain with diagonal boundary fields. We also compute the soliton boundary S matrix in the critical regime.

Original languageEnglish (US)
Pages (from-to)3663-3680
Number of pages18
JournalJournal of Physics A: Mathematical and General
Issue number20
StatePublished - May 21 1999
Externally publishedYes

ASJC Scopus subject areas

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


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