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hep-th2019★ 26 cited
On Generalized -systems
Zoltán Bajnok, Etienne Granet, Jesper Lykke Jacobsen +1
We formulate -systems for the closed XXZ, open XXX and open quantum-group-invariant XXZ quantum spin chains. Polynomial solutions of these -systems can be found efficiently,…
hep-th2019★ 24 cited
On zero-remainder conditions in the Bethe ansatz
Etienne Granet, Jesper Lykke Jacobsen
We prove that physical solutions to the Heisenberg spin chain Bethe ansatz equations are exactly obtained by imposing two zero-remainder conditions. This bridges the gap between di…