Q-systems with boundary parameters

Q-systems with boundary parameters

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 discrete Wronskian-type formulas (relating the fundam...

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Veröffentlicht in:Journal of physics. A, Mathematical and theoretical Mathematical and theoretical, 2020-07, Vol.53 (29), p.294001
1. Verfasser: Nepomechie, Rafael I
Format: Artikel
Sprache:eng
Schlagworte:
Bethe ansatz
boundary integrability
duality
Wronskian
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Zusammenfassung: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 discrete Wronskian-type formulas (relating the fundamental Q-function and its dual) that involve the boundary parameters.
ISSN:1751-8113
1751-8121
DOI:10.1088/1751-8121/ab9386