W algebra, Cosets and VOA for 4d N = 2 SCFT from M5 branes

Abstract

We identify vertex operator algebras (VOAs) of a class of Argyres-Douglas (AD) matters with two types of non-abelian flavor symmetries. They are the $W$ algebra defined using nilpotent orbit with partition $[q^m,1^s]$. Gauging above AD matters, we can find VOAs for more general $\mathcal{N}=2$ SCFTs engineered from 6d $(2,0)$ theories. For example, the VOA for general $(A_{N-1},A_{k-1})$ theory is found as the coset of a collection of above $W$ algebras. Various new interesting properties of 2d VOAs such as level-rank duality, conformal embedding, collapsing levels, coset constructions for known VOAs can be derived from 4d theory.

48 pages, 18 figures

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Cited by in corpus (2)

• 4d/2d $\to$ 3d/1d: A song of protected operator algebras
• 4d $\mathcal{N}=2$ SCFTs and lisse W-algebras