G-crossed tensor-category conjecture for twisted modules

Let VV be a vertex operator algebra satisfying the first two conditions of the twisted intertwining-operator conjecture: VV is simple with V(0)=C1V_{(0)}=\mathbb{C}\mathbf{1}, V(n)=0V_{(n)}=0 for n<0n<0, contragredient VVV'\cong V, and VV is C2C_{2}-cofinite. Let GG be a finite group of automorphisms of VV. Consider the category whose objects are grading-restricted generalized gg-twisted VV-modules for all gGg\in G.

G-crossed tensor-category conjecture. This category has a natural structure of a GG-crossed tensor category satisfying additional properties.

The conjecture extends the expected orbifold tensor-category structure beyond the completely reducible setting. The supplied text gives no resolution evidence.

Sources & referencesView supporting material

Primary source

Yi-Zhi Huang, “Representation theory of vertex operator algebras and orbifold conformal field theory”, arXiv:2004.01172 (2020).

Additional references

2 papers in this index state this conjecture (2016–2020). The statement above is taken from the most recent of them; the others are arXiv:1606.04493.

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