### Abstract

The antiferromagnetic Heisenberg spin chain with N spins has a sector with N=odd, in which the number of excitations is odd. In particular, there is a state with a single one-particle excitation. We exploit this fact to give a simplified derivation of the boundary S matrix for the open antiferromagnetic spin-1/2 Heisenberg spin chain with diagonal boundary magnetic fields.

Original language | English |
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Journal | Journal of Physics A: Mathematical and General |

Volume | 30 |

Issue number | 15 |

DOIs | |

Publication status | Published - 7 Aug 1997 |

### Keywords

- hep-th
- nlin.SI
- solv-int

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## Cite this

Doikou, A., Mezincescu, L., & I. Nepomechie, R. (1997). Simplified calculation of boundary S matrices.

*Journal of Physics A: Mathematical and General*,*30*(15). https://doi.org/10.1088/0305-4470/30/15/005