Quantum extension conjecture for the beta-gamma and bc vertex algebras

From papers

Let cmathfrakgl(11)cmathfrak{gl}(1|1) be the smallest type-A Lie superalgebra, let cmathcalVchbar,k(cmathfrakgl(11))cmathcal V_{chbar,k}(cmathfrak{gl}(1|1)) be its quantum vertex algebra, and set

V=nσn,0V1(gl(11)).\mathcal V=\bigoplus_n\sigma^{n,0}\mathcal V_1(\mathfrak{gl}(1|1)).

Here csigman,0csigma^{n,0} denotes the spectral-flow action. Quantum extension conjecture. The cwidehatDYchbar,cell(cmathfrakgl(11))cwidehat{DY}_{chbar,cell}(cmathfrak{gl}(1|1))-module cmathcalVcmathcal V has the structure of a quantum vertex algebra extending cmathcalV1(cmathfrakgl(11))cmathcal V_1(cmathfrak{gl}(1|1)), and it quantizes VcbetacgammacotimesVbcV_{cbetacgamma}cotimes V_{bc}. This is the quantum counterpart of the known classical extension VcbetacgammacotimesVbcnVn,0V_{cbetacgamma}cotimes V_{bc}\cong\bigoplus_n V_{n,0}; no resolution is given.

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Sources & referencesView supporting material

Primary source

Raschid Abedin and Wenjun Niu, “Double Yangian, Factorization, and qKZ-equation for Cotangent Lie Algebras”, arXiv:2512.16996 (2025).

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