The Capelli eigenvalue problem for Lie superalgebras
The Capelli eigenvalue problem for Lie superalgebras
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李超代数的 Capelli 特征值问题
DOI:
10.1007/s00209-019-02289-7
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发表时间:
2020
影响因子:
0.8
通讯作者:
Serganova, Vera
中科院分区:
文献类型:
--
作者:
Sahi, Siddhartha;Salmasian, Hadi;Serganova, Vera
For a finite dimensional unital complex simple Jordan superalgebraJ, the Tits–Kantor–Koecher construction yields a 3-graded Lie superalgebra, such that. Setand. In most cases, the spaceof superpolynomials onVis a completely reducible and multiplicity-free representation of, and there exists a direct sum decomposition, whereis a family of irreducible-modules parametrized by a set of partitions. In these cases, one can define a natural basisof “Capelli operators” for the algebraof-invariant superpolynomial differential operators onV. In this paper we complete the solution to the Capelli eigenvalue problem, which asks for the determination of the scalarby whichacts on. We associate a restricted root systemto the symmetric pairthat corresponds toJ, which is either a deformed root system of typeor a root system of type. We prove a necessary and sufficient condition on the structure offorto be completely reducible and multiplicity-free. Whensatisfies the latter condition we obtain an explicit formula for the eigenvalue, in terms of Sergeev–Veselov’s shifted super Jack polynomials whenis of type, and Okounkov-Ivanov’s factorial SchurQ-polynomials whenis of type. Along the way, we prove that the natural map from the centre of the enveloping algebra ofintois surjective in all cases except when, whereis the 10-dimensional exceptional Jordan superalgebra.
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DOI:
--
发表时间:
1996
期刊:
影响因子:
--
作者:
F. Knop;S. Sahi
通讯作者:
S. Sahi
DOI:
--
发表时间:
1992
期刊:
影响因子:
--
作者:
S. Helgason
通讯作者:
S. Helgason
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
S. Sahi;Hadi Salmasian
通讯作者:
Hadi Salmasian
DOI:
--
发表时间:
1977
期刊:
影响因子:
--
作者:
A. Joseph
通讯作者:
A. Joseph
影响因子:
1.4
作者:
R. Howe;T. Umeda
通讯作者:
T. Umeda