Universal Capelli identities and quantum immanants for the queer Lie superalgebra

Fuente: arXiv
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Hauptverfasser: Kashuba, Iryna, Molev, Alexander
Format: Preprint
Veröffentlicht: 2025
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author Kashuba, Iryna
Molev, Alexander
author_facet Kashuba, Iryna
Molev, Alexander
contents We apply the recently introduced idempotents for the Sergeev superalgebra to construct quantum immanants for the queer Lie superalgebra ${\mathfrak q}_N$ as central elements of its universal enveloping algebra. We prove universal odd and even Capelli identities for ${\mathfrak q}_N$ and use them to calculate the images of the quantum immanants under the action of ${\mathfrak q}_N$ in differential operators. We show that the Harish-Chandra images of the quantum immanants coincide with the factorial Schur $Q$-polynomials.
format Preprint
id arxiv_https___arxiv_org_abs_2512_21631
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Universal Capelli identities and quantum immanants for the queer Lie superalgebra
Kashuba, Iryna
Molev, Alexander
Representation Theory
We apply the recently introduced idempotents for the Sergeev superalgebra to construct quantum immanants for the queer Lie superalgebra ${\mathfrak q}_N$ as central elements of its universal enveloping algebra. We prove universal odd and even Capelli identities for ${\mathfrak q}_N$ and use them to calculate the images of the quantum immanants under the action of ${\mathfrak q}_N$ in differential operators. We show that the Harish-Chandra images of the quantum immanants coincide with the factorial Schur $Q$-polynomials.
title Universal Capelli identities and quantum immanants for the queer Lie superalgebra
topic Representation Theory
url https://arxiv.org/abs/2512.21631