Abstract
The \( \mathfrak{g}{{\mathfrak{l}}_{\mathcal{N}}} \) and \( {{\mathfrak{U}}_q}\left( {\mathfrak{g}{{\mathfrak{l}}_{\mathcal{N}}}} \right) \) quantum spin chains in the presence of integrable spin impurities are considered. Within the Bethe ansatz formulation, we derive the associated transmission amplitudes, and the corresponding transmission matrices — representations of the underlying quadratic algebra — that physically describe the interaction between the various particle-like excitations displayed by these models and the spin impurity.
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Doikou, A. Transmission matrices in \( \mathfrak{g}{{\mathfrak{l}}_{\mathcal{N}}} \) & \( {{\mathfrak{U}}_q}\left( {\mathfrak{g}{{\mathfrak{l}}_{\mathcal{N}}}} \right) \) quantum spin chains. J. High Energ. Phys. 2013, 103 (2013). https://doi.org/10.1007/JHEP08(2013)103
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DOI: https://doi.org/10.1007/JHEP08(2013)103