Classifying Relaxed Highest-Weight Modules for Admissible-Level Bershadsky–Polyakov Algebras
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Cites background from "Classifying Relaxed Highest-Weight ..."
...for k+ 3/2 ∈ Z≥0, while in other cases it is a non-rational vertex algebra. More recently, for kadmissible and non-integral, irreducible Wk–modules were classified in [9] in some special cases, and in [24] in full generality. A realization of Wk, when 2k+ 3 ∈/Z≥0, and its relaxed modules is presented in [8], which gives a natural generalization of the realization of the affine vertex algebra Vk(sl(2)) fr...
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... us now mention certain problems for Bershadsky-Polyakov vertex algebras, which remain unsolved in papers listed above. A. Classification of irreducible Wk–modules for integer levels k, k+ 2 ∈ Z≥0. In [24], authors classified irreducible Wk–modules for kadmissible, nonintegral. They showed that every irreducible highest weight module for Wk is obtained as an image of the admissible modules for Lk(sl(3))...
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"Classifying Relaxed Highest-Weight ..." refers background or methods in this paper
...ndedV-module,thenMtop isnaturallyaZhu[V]-module. Infact,itmaybeidentifiedwithZhu[M]if Misalsosimple,thoughthiswillnotbetrueingeneral. Simplelower-boundedV-moduleshavethefollowingproperty. Theorem 3.7 ([40]). Zhu[−]and Ind[−]induce a bijection between the sets of isomorphism classes of simple lowerbounded V-modules and simple Zhu[]-modules. To classify the simple lower-bounded V-modules, it is therefore ...
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...dcharacters, necessary to construct partition functions in conformal field theory, we shall also require that the weight spaces of these simple relaxed highest-weight modules are finite-dimensional. By [40], it therefore suffices to classify the simple weight modules, with finite-dimensional weight spaces, of the untwisted and twisted Zhu algebras of BP(u,v). A directassaultonthis classificationseems quited...
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...treating it as a U0-module equippedwithatrivialU′ >-action,andtakingaquotientthatimposes,amongotherthings,thegeneralisedcommutation relations (Borcherds relations) of V. The details may be foundin [40,42]. Proposition 3.5 ([40]). There exists a functor, which we call the Zhu induction functor, that assigns to any Zhu[V]- module Na V-module Ind[N]such that Zhu[Ind[N]]≃N. The Zhu functor is thus a left ...
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...ols that we shall use to classify Bershadsky–Polyakovmodules are the functors induced between these modules and those of the corresponding(untwisted) Zhu algebra. Althoughoriginally introduced by Zhu [40], the idea behind this unital associative algebra was already well-known to physicists (see [41] for example). Here, we use a (slightly restricted) abstract definition that is based on the physicists’ ...
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"Classifying Relaxed Highest-Weight ..." refers background in this paper
...Recall [49] that if I is an ideal of a vertex operator algebra V, then Zhu[V/I] ≃ Zhu[V]/Zhu[I]....
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...Every highest-weight module for the affine Kac–Moody algebra ŝl3 is a V (sl3)-module [49]....
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"Classifying Relaxed Highest-Weight ..." refers methods in this paper
...In a companion paper [28], these relaxed modules are constructed from the highest-weight modules of the Zamolodchikov algebra [29], the regular W-algebra associated to sl3, using the inverse quantum hamiltonian reduction procedure of [16, 30]....
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