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We classify the self-dual (or holomorphic) vertex operator superalgebras of central charge 24, or in physics parlance the purely left-moving, fermionic 2-dimensional conformal field theories with just one primary field. There are exactly…

Quantum Algebra · Mathematics 2024-03-27 Gerald Höhn , Sven Möller

It is proved that any vertex operator algebra for which the image of the Virasoro element in Zhu's algebra is algebraic over complex numbers is finitely generated. In particular, any vertex operator algebra with a finite dimensional Zhu's…

Quantum Algebra · Mathematics 2008-06-17 Chongying Dong , Wei Zhang

The dimension of any module over an algebra of affiliated operators ${\mathcal U}$ of a finite von Neumann algebra ${\mathcal A}$ is defined using a trace on ${\mathcal A}.$ All zero-dimensional ${\mathcal U}$-modules constitute the torsion…

Rings and Algebras · Mathematics 2010-09-14 Lia Vas

We construct a factorization algebra, via the factorization envelope, starting from a Lie conformal algebra, and prove that the associated vertex algebra is isomorphic to its enveloping vertex algebra. Our construction generalizes the…

Quantum Algebra · Mathematics 2026-02-26 Yusuke Nishinaka

In this paper, we study representations of the vertex operator algebra $L(k,0)$ at one-third admissible levels $k= -5/3, -4/3, -2/3$ for the affine algebra of type $G_2^{(1)}$. We first determine singular vectors and then obtain a…

Representation Theory · Mathematics 2010-11-16 Jonathan D. Axtell , Kyu-Hwan Lee

In this paper, we give a construction of simple modules generalizing and including both highest weight and Whittaker modules for the Neveu-Schwarz algebra, in the spirit of the work of Mazorchuk and Zhao on simple Virasoro modules. We…

Representation Theory · Mathematics 2019-06-21 Dong Liu , Yufeng Pei , Limeng Xia

This paper is the first in a series of papers developing a functional-analytic theory of vertex (operator) algebras and their representations. For an arbitrary Z-graded finitely-generated vertex algebra (V, Y, 1) satisfying the standard…

Quantum Algebra · Mathematics 2009-10-31 Yi-Zhi Huang

We give an algebraic proof of the unitarity of the vertex operator algebra $L(21/22, 0)\oplus L(21/22, 8)$ and of all its irreducible ordinary modules, using a coset realization arising from the $3C$-algebra. Motivated by the structure of…

Quantum Algebra · Mathematics 2026-01-26 Xiangyu Jiao , Wen Zheng

The direct sum of irreducible level one integrable representations of affine Kac-Moody Lie algebra of (affine) type $ADE$ carries a structure of $P/Q$-graded vertex operator algebra. There exists a filtration on this direct sum studied by…

Representation Theory · Mathematics 2019-02-20 Evgeny Feigin , Ievgen Makedonskyi

We give an abstract construction, based on the Belavin-Polyakov-Zamolodchikov equations, of a family of vertex operator algebras of rank $26$ associated to the modified regular representations of the Virasoro algebra. The vertex operators…

Quantum Algebra · Mathematics 2010-12-30 Igor Frenkel , Minxian Zhu

In this paper, we study the representation theory for the affine Lie algebra $\H$ associated to the Nappi-Witten model $H_{4}$. We classify all the irreducible highest weight modules of $\H$. Furthermore, we give a necessary and sufficient…

Quantum Algebra · Mathematics 2011-04-21 Yixin Bao , Cuipo Jiang , Yufeng Pei

We propose a correspondence between vertex operator superalgebras and families of sigma models in which the two structures are related by symmetry properties and a certain reflection procedure. The existence of such a correspondence is…

High Energy Physics - Theory · Physics 2021-09-15 Vassilis Anagiannis , Miranda C. N. Cheng , John Duncan , Roberto Volpato

We study a simple, self-dual, rational, and $C_2$-cofinite vertex operator algebra of CFT-type whose simple current modules are graded by $\mathbb{Z}_{2k}$. Based on those simple current modules, a vertex operator algebra associated with a…

Representation Theory · Mathematics 2019-12-04 Hiromichi Yamada , Hiroshi Yamauchi

We apply the factorization and vector bundle propositionerty of the sheaves of conformal blocks on $\overline{\mathscr{M}}_{g,n}$. defined by vertex operator algebras (VOAs) and give geometric proofs of essential results in the…

Quantum Algebra · Mathematics 2025-08-05 Xu Gao , Jianqi Liu

We investigate vertex operator algebras $L(k,0)$ associated with modular-invariant representations for an affine Lie algebra $A_1 ^{(1)}$ , where k is 'admissible' rational number. We show that VOA $L(k,0)$ is rational in the category $\cal…

q-alg · Mathematics 2008-02-03 Drazen Adamovic , Antun Milas

For a vertex operator algebra V, a V-module M and a nonnegative integer n, an A_n(V)-bimodule A_n(M) is constructed and studied. The connection between A_n(M) and intertwining operators are discussed. In the case that V is rational, A_n(M)…

Quantum Algebra · Mathematics 2013-02-27 Chongying Dong , Li Ren

We study the general structure of Fermi conformal nets of von Neumann algebras on the circle, consider a class of topological representations, the general representations, that we characterize as Neveu-Schwarz or Ramond representations, in…

Mathematical Physics · Physics 2009-04-17 Sebastiano Carpi , Yasuyuki Kawahigashi , Roberto Longo

In this note we prove that the vertex operator superalgebras associated to the unitary representations of the N=2 superconformal algebra are rational.

Quantum Algebra · Mathematics 2007-05-23 Drazen Adamovic

In this paper, we investigate the theory of $g$-twisted modules for modular $\frac{1}{2}\mathbb{Z}$-graded vertex superalgebras over an algebraically closed field $\mathbb{F}$ of prime characteristic $p>2$. For a…

Quantum Algebra · Mathematics 2026-03-17 Xiangyu Jiao , Qiang Mu , Wei Wang

In the first part of my talk I will explain a solution to the extension of Lie's problem on classification of "local continuous transformation groups of a finite-dimensional manifold" to the case of supermanifolds. (More precisely, the…

Mathematical Physics · Physics 2007-05-23 Victor G. Kac