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arxiv: 1610.05865 · v4 · pith:XJR5FFASnew · submitted 2016-10-19 · 🧮 math.QA · hep-th· math.RT

Quasi-lisse vertex algebras and modular linear differential equations

Tomoyuki Arakawa , Kazuya Kawasetsu This is my paper
classification 🧮 math.QA hep-thmath.RT
keywords vertexalgebrasmodularquasi-lisseaffinecharacterdifferentiallinear
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We introduce a notion of quasi-lisse vertex algebras, which generalizes admissible affine vertex algebras. We show that the normalized character of an ordinary module over a quasi-lisse vertex operator algebra has a modular invariance property, in the sense that it satisfies a modular linear differential equation. As an application we obtain the explicit character formulas of simple affine vertex algebras associated with the Deligne exceptional series at level $-h^{\vee}/6-1$, which express the homogeneous Schur indices of 4d SCFTs studied by Beem, Lemos, Liendo, Peelaers, Rastelli and van Rees, as quasi-modular forms.

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