On a symmetry of the category of integrable modules

Details On a symmetry of the category of integrable modules On a symmetry of the category of integrable modules

2009-01-29

arxiv.org/abs/0901.4791v1

Mathematics

Quantum Algebra

24 pages

Scientific paper

Haisheng Li showed that given a module (W,Y_W(\cdot,x)) for a vertex algebra (V,Y(\cdot,x)), one can obtain a new V-module W^{\Delta} = (W,Y_W(\Delta(x)\cdot,x)) if \Delta(x) satisfies certain natural conditions. Li presented a collection of such \Delta-operators for V=L(k,0) (a vertex operator algebra associated with an affine Lie algebras, k a positive integer). In this paper, for each irreducible L(k,0)-module W, we find a highest weight vector of W^{\Delta} when \Delta is associated with a miniscule coweight. From this we completely determine the action of these \Delta-operators on the set of isomorphism equivalence classes of L(k,0)-modules.

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