dorsal/arxiv
View SchemaCoinvariants for Yangian doubles and quantum KZ equations
| Authors | B. Enriquez, G. Felder |
|---|---|
| Categories | |
| ArXiv ID | q-alg/9707012 |
| URL | https://arxiv.org/abs/q-alg/9707012 |
Abstract
We present a quantum version of the construction of the KZ system of equations as a flat connection on the spaces of coinvariants of representations of tensor products of Kac-Moody algebras. We consider here representations of a tensor product of Yangian doubles and compute the coinvariants of a deformation of the subalgebra generated by the regular functions of a rational curve with marked points. We observe that Drinfeld's quantum Casimir element can be viewed as a deformation of the zero-mode of the Sugawara tensor in the Yangian double. These ingredients serve to define a compatible system of difference equations, which we identify with the quantum KZ equations introduced by I. Frenkel and N. Reshetikhin.
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"date_created": "2026-03-02T18:01:28.008000Z",
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"abstract": "We present a quantum version of the construction of the KZ system of\nequations as a flat connection on the spaces of coinvariants of representations\nof tensor products of Kac-Moody algebras. We consider here representations of a\ntensor product of Yangian doubles and compute the coinvariants of a deformation\nof the subalgebra generated by the regular functions of a rational curve with\nmarked points. We observe that Drinfeld\u0027s quantum Casimir element can be viewed\nas a deformation of the zero-mode of the Sugawara tensor in the Yangian double.\nThese ingredients serve to define a compatible system of difference equations,\nwhich we identify with the quantum KZ equations introduced by I. Frenkel and N.\nReshetikhin.",
"arxiv_id": "q-alg/9707012",
"authors": [
"B. Enriquez",
"G. Felder"
],
"categories": [
"q-alg",
"math.QA"
],
"title": "Coinvariants for Yangian doubles and quantum KZ equations",
"url": "https://arxiv.org/abs/q-alg/9707012"
},
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