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On the inhomogeneous T-Q relation for quantum integrable models
Published 8 Jun 2015 in math-ph, cond-mat.stat-mech, hep-th, math.MP, and nlin.SI | (1506.02512v1)
Abstract: The off-diagonal Bethe Ansatz method [1] is used to revisit the periodic XXX Heisenberg spin-1/2 chain. It is found that the spectrum of the transfer matrix can be characterized by an inhomogeneous T-Q relation, a natural but nontrivial extension of Baxter's T-Q relation [2].
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