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math-ph2010★ 65 cited
Separation of variables for integrable spin-boson models
Luigi Amico, Holger Frahm, Andreas Osterloh +1
We formulate the functional Bethe ansatz for bosonic (infinite dimensional) representations of the Yang-Baxter algebra. The main deviation from the standard approach consists in a…
math-ph2008★ 1 cited
Non-linear Integral Equations and Determinant Formulae of the Open XXZ Spin Chain
A. Seel, T. Wirth
We derive a non-linear integral equation for the Bethe-ansatz solvable open XXZ spin chain of arbitrary length describing the lowest lying state with zero magnetization. For this c…