Metaplectic representations of Hecke algebras, Weyl group actions, and associated polynomials
Metaplectic representations of Hecke algebras, Weyl group actions, and associated polynomials
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Hecke 代数、Weyl 群作用和相关多项式的 Metaplectic 表示
DOI:
10.1007/s00029-021-00654-1
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Venkateswaran, Vidya
中科院分区:
文献类型:
--
作者:
Sahi, Siddhartha;Stokman, Jasper V.;Venkateswaran, Vidya
We construct a family of representations of affine Hecke algebras, which depend on a number of auxiliary parameters, and which we refer to asmetaplecticrepresentations. We realize these representations as quotients of certain parabolically induced modules, and we apply the method of Baxterization (localization) to obtain actions of corresponding Weyl groups on rational functions on the torus. Our construction both generalizes and provides a conceptual proof of earlier results of Chinta, Gunnells, and Puskas, which had depended on a crucial computer verification. A key motivation is that when the parametersare specialized to certain Gauss sums, the resulting representation and its localization arise naturally in the consideration ofp-parts of Weyl group multiple Dirichlet series. In this special case, similar results have been previously obtained in the literature by the study of Iwahori Whittaker functions for principal series of metaplectic covers of reductivep-adic groups. However this technique is not available for generic parameters. It turns out that the metaplectic representations can be extended to the double affine Hecke algebra, where they share many important properties with Cherednik’s basic polynomial representation, which they generalize. This allows us to introduce families of metaplectic polynomials, which depend on the, and which generalize Macdonald polynomials. In this paper we discuss in some detail the situation for typeA, which is of considerable interest in algebraic combinatorics. We postpone some of the proofs, as well as a discussion of other types, to the sequel.
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DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
Ben Brubaker;S. Friedberg
通讯作者:
S. Friedberg
DOI:
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发表时间:
2011
期刊:
影响因子:
--
作者:
Ben Brubaker;D. Bump;S. Friedberg
通讯作者:
S. Friedberg
DOI:
--
发表时间:
1982
期刊:
影响因子:
--
作者:
S. Kato
通讯作者:
S. Kato
影响因子:
1.8
作者:
CJ Bushnell;PC Kutzko
通讯作者:
CJ Bushnell;PC Kutzko
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
G. Chinta;S. Friedberg;Paul E. Gunnells
通讯作者:
Paul E. Gunnells