Current presentation for the double super-Yangian and Bethe vectors
arXiv:1611.09620 · doi:10.1070/RM9754
Abstract
We find Bethe vectors for quantum integrable models associated with the supersymmetric Yangians in terms of the current generators of the Yangian double . More specifically, we use the method of projections onto intersections of different type Borel subalgebras in this infinite dimensional algebra to construct the Bethe vectors. Calculating these projection the supersymmetric Bethe vectors can be expressed through matrix elements of the universal monodromy matrix elements. Using two different but isomorphic current realizations of the Yangian double we obtain two different presentations for the Bethe vectors. These Bethe vectors are also shown to obey some recursion relations which prove their equivalence.
61 pages; some typos corrected; title changed to make it more precise and distinguish it from a previous publication
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