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It is proved that the parafermion vertex operator algebra associated to the irreducible highest weight module for the affine Kac-Moody algebra A_1^{(1)} of level k coincides with a certain W-algebra. In particular, a set of generators for…

Quantum Algebra · Mathematics 2014-11-18 Chongying Dong , Ching Hung lam , Qing Wang , Hiromichi Yamada

In this paper, the structure of the parafermion vertex operator algebra associated to an integrable highest weight module for simple affine Lie superalgebra $osp(1|2n)$ is studied. Particularly, we determine the generators for this algebra.

Quantum Algebra · Mathematics 2021-08-21 Cuipo Jiang , Qing Wang

It is proved that the regularity of parafermion vertex operator algebras associated to integrable highest weight modules for affine Kac-Moody algebra A_1^{(1)} implies the C_2-cofiniteness of parafermion vertex operator algebras associated…

Quantum Algebra · Mathematics 2010-05-12 Chongying Dong , Qing Wang

In this paper, the irreducible modules for the $\mathbb{Z}_{2}$-orbifold vertex operator subalgebra of the parafermion vertex operator algebra associated to the irreducible highest weight modules for the affine Kac-Moody algebra $A_1^{(1)}$…

Representation Theory · Mathematics 2017-12-21 Cuipo Jiang , Qing Wang

The quantum dimensions and the fusion rules for the parafermion vertex operator algebra associated to the irreducible highest weight module for the affine Kac-Moody algebra A_1^{(1)} of level k are determined.

Quantum Algebra · Mathematics 2014-12-01 Chongying Dong , Qing Wang

This paper is about the orbifold theory of affine and parafermion vertex operator algebras. It is known that the parafermion vertex operator algebra $K(sl_2,k)$ associated to the integrable highest weight modules for the affine Kac-Moody…

Quantum Algebra · Mathematics 2019-04-04 Cuipo Jiang , Qing Wang

The rationality of the parafermion vertex operator algebra associated to any finite dimensional simple Lie algebra and any nonnegative integer is established and the irreducible modules are determined.

Quantum Algebra · Mathematics 2016-10-18 Chongying Dong , Li Ren

The irreducible modules for the parafermion vertex operator algebra associated to any finite dimensional Lie algebra and any positive integer are identified, the quantum dimensions are computed and the fusion rules are determined.

Quantum Algebra · Mathematics 2016-10-18 Chunrui Ai , Chongying Dong , Xiangyu Jiao , Li Ren

We study the vertex algebras associated with modular invariant representations of affine Kac-Moody algebras at fractional levels, whose simple highest weight modules are classified by Joseph's characteristic varieties. We show that an…

Quantum Algebra · Mathematics 2016-02-10 Tomoyuki Arakawa

The main result of the paper establishes the irreducibility of a large family of nonzero central charge induced modules over Affine Lie algebras for any non standard parabolic subalgebra. It generalizes all previously known partial results…

Representation Theory · Mathematics 2018-04-09 Vyacheslav Futorny , Iryna Kashuba

Let $G$ be a simple complex Lie group with Lie algebra $\mf g$ and let $\af$ be the affine Lie algebra. We use intertwining operators and Knizhnik-Zamolodchikov equations to construct a family of $\N$-graded vertex operator algebras…

Quantum Algebra · Mathematics 2007-11-20 Minxian Zhu

The trace functions for the Parafermion vertex operator algebra associated to any finite dimensional simple Lie algebra $\g$ and any positive integer $k$ are studied and an explicit modular transformation formula of the trace functions is…

Quantum Algebra · Mathematics 2018-10-12 Chongying Dong , Victor G. Kac , Li Ren

The following integrability theorem for vertex operator algebras V satisfying some finiteness conditions(C_2-cofinite and CFT-type) is proved: the vertex operator subalgebra generated by a simple Lie subalgebra {\frak g} of the weight one…

Quantum Algebra · Mathematics 2007-05-23 Chongying Dong , Geoffrey Mason

W_k structure underlying the tensverse realization of SU(2) at level k is analyzed. Extension of the equivalence existing between covariant and light-cone gauge realization of affine Kac-Moody algebra to W_k algebras is given. Higher spin…

High Energy Physics - Theory · Physics 2009-10-30 Vincenzo Marotta

We define regular Kac-Moody superalgebras and classify them using integrable modules. We give conditions for irreducible highest weight modules of regular Kac-Moody superalgebras to be integrable. This paper is a major part of the proof for…

Representation Theory · Mathematics 2010-11-08 Crystal Hoyt

An explicit vertex operator algebra construction is given of a class of irreducible modules for toroidal Lie algebras.

Quantum Algebra · Mathematics 2007-05-23 S. Berman , Y. Billig , J. Szmigielski

We give a geometric construction of the Verma modules of a symmetric Kac-Moody Lie algebra in terms of constructible functions on the varieties of nilpotent finite-dimensional modules of the corresponding preprojective algebra.

Representation Theory · Mathematics 2019-03-05 Christof Geiss , Bernard Leclerc , Jan Schröer

This paper is about the orbifold theory of parafermion vertex operator algebras $K(osp(1|2),k)$ associated to the affine vertex operator superalgebra $L_{\widehat{osp(1|2)}}(k,0)$ with any positive integer $k$. Among the main results, we…

Quantum Algebra · Mathematics 2023-12-07 Cuipo Jiang , Qing Wang

After giving some definitions for vertex operator SUPERalgebras and their modules, we construct an associative algebra corresponding to any vertex operator superalgebra, such that the representations of the vertex operator algebra are in…

High Energy Physics - Theory · Physics 2008-02-03 Victor G. Kac , Weiqiang Wang

We describe Borel and parabolic subalgebras of affine Lie superalgebras and study the Verma type modules associated to such subalgebras. We give necessary and sufficient conditions under which these modules are simple.

Representation Theory · Mathematics 2018-12-18 Lucas Calixto , Vyacheslav Futorny
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