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A note on $q$-oscillator realizations of $U_{q}(gl(M|N))$ for Baxter $Q$-operators

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arxiv 1907.07868 v2 pith:6QACS7UV submitted 2019-07-18 math-ph hep-thmath.MPmath.QA

classification math-phhep-thmath.MPmath.QA
keywords q-oscillatorrealizationsbaxterobtainquantumsuperalgebraaffinealgebra
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abstract

We consider asymptotic limits of q-oscillator (or Heisenberg) realizations of Verma modules over the quantum superalgebra $U_{q}(gl(M|N))$, and obtain q-oscillator realizations of the contracted algebras proposed in [arXiv:1205.1471]. Instead of factoring out the invariant subspaces, we make reduction on generators of the q-oscillator algebra, which gives a shortcut to the problem. Based on this result, we obtain explicit q-oscillator representations of a Borel subalgebra of the quantum affine superalgebra $U_{q}(\hat{gl}(M|N))$ for Baxter Q-operators.

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  1. Baxter Q-operators from a Schwinger-Boson construction of the master T-operator and the mKP hierarchy

    math-ph 2026-07 accept novelty 6.0 of 10

    A Schwinger-boson Fock-space trace defines the gl(M) master T-operator, and the same L-operator degenerates to the Q-operator L-operator of Bazhanov–Frassek–Lukowski–Meneghelli–Staudacher.

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