On separation of variables and completeness of the Bethe ansatz for quantum gl_N Gaudin model

Details On separation of variables and completeness of the Bethe ansatz for quantum gl_N Gaudin model On separation of variables and completeness of the Bethe ansatz for quantum gl_N Gaudin model

2007-12-06

arxiv.org/abs/0712.0981v1

Mathematics

Quantum Algebra

Latex, 9 pages

Scientific paper

In this note, we discuss implications of the results obtained in [MTV4]. It was shown there that eigenvectors of the Bethe algebra of the quantum gl_N Gaudin model are in a one-to-one correspondence with Fuchsian differential operators with polynomial kernel. Here, we interpret this fact as a separation of variables in the gl_N Gaudin model. Having a Fuchsian differential operator with polynomial kernel, we construct the corresponding eigenvector of the Bethe algebra. It was shown in [MTV4] that the Bethe algebra has simple spectrum if the evaluation parameters of the Gaudin model are generic. In that case, our Bethe ansatz construction produces an eigenbasis of the Bethe algebra.

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