Geodesic
Projection method and a~universal weight function for the~quantum
Teoretičeskaâ i matematičeskaâ fizika, Tome 150 (2007) no. 2, pp. 286-303

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We calculate the projection of the product of the Drinfeld currents on the intersection of the different Borel subalgebras in the current realization of the quantum affine algebra $U_q(\widehat{\mathfrak{sl}}_{N+1})$. This projection yields a universal weight function and has the structure of nested Bethe vectors.
Keywords: quantum affine algebras, nested Bethe ansatz. 
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     author = {S. Z. Pakulyak and S. M. Khoroshkin},
     title = {Projection method and a~universal weight function for the~quantum},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
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     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2007_150_2_a7/}
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S. Z. Pakulyak; S. M. Khoroshkin. Projection method and a~universal weight function for the~quantum. Teoretičeskaâ i matematičeskaâ fizika, Tome 150 (2007) no. 2, pp. 286-303. http://geodesic.mathdoc.fr/item/TMF_2007_150_2_a7/