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arXiv · 1912.12702

Q-systems with boundary parameters

Rafael I. Nepomechie
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Abstract

Q-systems provide an efficient way of solving Bethe equations. We formulate here Q-systems for both the isotropic and anisotropic open Heisenberg quantum spin-1/2 chains with diagonal boundary magnetic fields. We check these Q-systems using novel Wronskian-type formulas (relating the fundamental Q-function and its dual) that involve the boundary parameters.

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Rafael I. Nepomechie. 2020-05-17. Q-systems with boundary parameters. https://doi.org/10.1088/1751-8121%2Fab9386

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