Abstract
We introduce the infinite-dimensional Lie superalgebra \({\mathcal{A}}\) and construct a family of mappings from a certain category of \({\mathcal{A}}\) –modules to the category of \({A_1^{(1)}}\) –modules at the critical level. Using this approach, we prove the irreducibility of a large family of \({A_1^{(1)}}\) –modules at the critical level parameterized by \(\chi(z) \in \mathbb{C}((z))\) . As a consequence, we present a new proof of irreducibility of certain Wakimoto modules. We also give natural realizations of irreducible quotients of relaxed Verma modules and calculate characters of these representations.
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Communicated by Y. Kawahigashi
Partially supported by the MZOS grant 0037125 of the Republic of Croatia
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Adamović, D. Lie Superalgebras and Irreducibility of \(A_1^{(1)}\) –Modules at the Critical Level. Commun. Math. Phys. 270, 141–161 (2007). https://doi.org/10.1007/s00220-006-0153-7
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DOI: https://doi.org/10.1007/s00220-006-0153-7