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JOURNALS // Izvestiya Rossiiskoi Akademii Nauk. Seriya Matematicheskaya // Archive

Izv. RAN. Ser. Mat., 2022 Volume 86, Issue 6, Pages 187–206 (Mi im9234)

This article is cited in 2 papers

Categories of weight modules for unrolled restricted quantum groups at roots of unity

M. Rupert

Utah State University

Abstract: Motivated by connections to the singlet vertex operator algebra in the $\mathfrak{g}=\mathfrak{sl}_2$ case, we study the unrolled restricted quantum group $\overline{U}_q^{\,H}(\mathfrak{g})$ for any finite dimensional complex simple Lie algebra $\mathfrak{g}$ at arbitrary roots of unity with a focus on its category of weight modules. We show that the braid group action naturally extends to the unrolled quantum groups and that the category of weight modules is a generically semi-simple ribbon category (previously known only for odd roots) with trivial Müger center and self-dual projective modules.

Keywords: quantum groups, unrolled quantum groups, representation theory.

UDC: 517.986.5+512.554.34

MSC: 20G42

Received: 24.06.2021
Revised: 28.02.2022

DOI: 10.4213/im9234


 English version:
Izvestiya: Mathematics, 2022, 86:6, 1204–1224

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© Steklov Math. Inst. of RAS, 2024