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 language | English |
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Article number | 194007 |
Journal | Journal of Physics A: Mathematical and Theoretical |
Volume | 41 |
Issue number | 19 |
DOIs | |
Publication status | Published - 16 May 2008 |
Keywords
- hep-th
- cond-mat.stat-mech
- math-ph
- math.MP
- nlin.SI