Mathematics – Representation Theory
Scientific paper
2010-12-10
Mathematics
Representation Theory
30 pages, submitted for publication
Scientific paper
We initiate and develop the theory of finite $W$-superalgebras $\mathcal{W}_\chi$ associated to the queer Lie superalgebra $\g=\q(N)$ and a nilpotent linear functional $\chi \in \ev\g^*$. We show that the definition of the $W$-superalgebra is independent of various choices. We also establish a Skryabin type equivalence between the category of $\mathcal{W}_\chi$-modules and a category of certain $\g$-modules. A higher Sergeev duality is established extending the classical Sergeev duality at level 1 under suitable assumptions.
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