Kyoto Journal of Mathematics
- Kyoto J. Math.
- Volume 51, Number 2 (2011), 337-364.
Quantum continuous : Semiinfinite construction of representations
We begin a study of the representation theory of quantum continuous , which we denote by . This algebra depends on two parameters and is a deformed version of the enveloping algebra of the Lie algebra of difference operators acting on the space of Laurent polynomials in one variable. Fundamental representations of are labeled by a continuous parameter . The representation theory of has many properties familiar from the representation theory of : vector representations, Fock modules, and semiinfinite constructions of modules. Using tensor products of vector representations, we construct surjective homomorphisms from to spherical double affine Hecke algebras for all . A key step in this construction is an identification of a natural basis of the tensor products of vector representations with Macdonald polynomials. We also show that one of the Fock representations is isomorphic to the module constructed earlier by means of the -theory of Hilbert schemes.
Kyoto J. Math. Volume 51, Number 2 (2011), 337-364.
First available in Project Euclid: 22 April 2011
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Primary: 17B37: Quantum groups (quantized enveloping algebras) and related deformations [See also 16T20, 20G42, 81R50, 82B23] 81R10: Infinite-dimensional groups and algebras motivated by physics, including Virasoro, Kac-Moody, $W$-algebras and other current algebras and their representations [See also 17B65, 17B67, 22E65, 22E67, 22E70] 05E10: Combinatorial aspects of representation theory [See also 20C30]
Feigin, B.; Feigin, E.; Jimbo, M.; Miwa, T.; Mukhin, E. Quantum continuous gl ∞ : Semiinfinite construction of representations. Kyoto J. Math. 51 (2011), no. 2, 337--364. doi:10.1215/21562261-1214375. https://projecteuclid.org/euclid.kjm/1303494506