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arXiv · 2005.13842

On Zhu's algebra and $C_2$--algebra for symplectic fermion vertex algebra $SF(d)^+$

Drazen Adamovic·Ante Ceperic
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Abstract

In this paper, we study the family of vertex operator algebras $SF(d)^+$, known as symplectic fermions. This family is of a particular interest because these VOAs are irrational and $C_2$-cofinite. We determine the Zhu's algebra $A(SF(d)^+)$ and show that the equality of dimensions of $A(SF(d)^+)$ and the $C_2$--algebra $\mathcal P(SF(d)^+)$ holds for $d \geq 2$ (the case of $d=1$ was treated by T. Abe). We use these results to prove a conjecture by Y. Arike and K. Nagatomo on the dimension of the space of one-point functions on $SF(d)^+$.

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BibTeXRIS

Drazen Adamovic, Ante Ceperic. 2020-05-28. On Zhu's algebra and $C_2$--algebra for symplectic fermion vertex algebra $SF(d)^+$. https://arxiv.org/abs/2005.13842

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