Non-diagonal reflection for the non-critical XXZ model

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Abstract

The most general physical boundary $S$-matrix for the open XXZ spin chain in the non-critical regime ($\cosh (\eta)>1$) is derived starting from the bare Bethe ansazt equations. The boundary $S$-matrix as expected is expressed in terms of $\Gamma_q$-functions. In the isotropic limit corresponding results for the open XXX chain are also reproduced.
Original languageEnglish
Article number194007
JournalJournal of Physics A: Mathematical and Theoretical
Volume41
Issue number19
DOIs
Publication statusPublished - 16 May 2008

Keywords

  • hep-th
  • cond-mat.stat-mech
  • math-ph
  • math.MP
  • nlin.SI

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