### Abstract

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 language | English (US) |
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Article number | 025 |

Pages (from-to) | 1027-1045 |

Number of pages | 19 |

Journal | Journal of Physics A: General Physics |

Volume | 28 |

Issue number | 4 |

DOIs | |

State | Published - Dec 1 1995 |

Externally published | Yes |

### ASJC Scopus subject areas

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

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## Cite this

Grisaru, M. T., Mezincescu, L., & Nepomechie, R. I. (1995). Direct calculation of the boundary S-matrix for the open Heisenberg chain.

*Journal of Physics A: General Physics*,*28*(4), 1027-1045. [025]. https://doi.org/10.1088/0305-4470/28/4/025