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Author

Andrew Riesen

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Preprint Oct 2026

The Haagerup VOA at $c=8$

We announce an explicit construction of a unitary, strongly rational vertex operator algebra $U$ of central charge $8$ inside $V_{E_6\oplus A_2}$, with a ribbon equivalence $\mathrm{Rep}(U)\simeq Z(\mathcal H_3)$ realizing the Haagerup double. The vertex algebra is generated by six affine currents and three specified w...

Andrew Riesen · 4 citations
Preprint Oct 2026

Vertex operator algebra realizations of untwisted Haagerup--Izumi centers

For every odd integer $N\geq3$, we construct an untwisted Haagerup--Izumi fusion category $\mathcal H_N$ on the negative spherical branch and a simple, self-contragredient, regular, $C_2$-cofinite vertex operator algebra $E_N$ of central charge $-16N$, together with an equivalence of modular fusion categories: \[ \oper...

D. Evans, Andrew Riesen · 0 citations

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