English

$q$-deformed Howe duality for orthosymplectic Lie superalgebras

Representation Theory 2025-10-21 v3

Abstract

We give a qq-analogue of Howe duality associated to a pair (\mfg,G)(\mf{g},G), where \mfg\mf{g} is an orthosymplectic Lie superalgebra and G=O,Sp2G=O_\ell, Sp_{2\ell}. We define explicitly {commuting actions} of a quantized enveloping algebra of \mfg\mf{g} and the ı\imathquantum group of {type AI and AII} on a qq-deformed supersymmetric space, and describe its semisimple decomposition whose classical limit recovers the (\mfg,G)(\mf{g},G)-duality. As special cases, we obtain qq-analogues of (\mfg,G)(\mf{g},G)-dualities on symmetric and exterior algebras for \mfg=\mfso2n\mf{g}=\mf{so}_{2n}, \mfsp2n\mf{sp}_{2n}.

Keywords

Cite

@article{arxiv.2506.05959,
  title  = {$q$-deformed Howe duality for orthosymplectic Lie superalgebras},
  author = {Jeong Bae and Jae-Hoon Kwon},
  journal= {arXiv preprint arXiv:2506.05959},
  year   = {2025}
}

Comments

37 pages, more details are provided for the proofs of Propositions 3.4 and 4.1, the presentation of Section 4.1 has been revised in a more simplified way, the proof of Lemma 4,6 is revised and clarified, to appear in Letters in Mathematical Physics