Quadratic-category modular data conjecture for odd abelian groups

Let AA be a finite abelian group of odd order, and let C\mathcal{C} be a quadratic category of type (Z2,A,1)(\mathbb{Z}_2,A,1) whose VecZ2\operatorname{Vec}_{\mathbb{Z}_2} subcategory has trivial associator. Odd-group quadratic-category conjecture. The modular data of Z(C)\mathcal{Z}(\mathcal{C}) are the stated tensor-product modular data, with Ge=Z2×Z2G_e=\mathbb{Z}_2\times\mathbb{Z}_2, Go=AG_o=A, and q1,e(x,y)=(1)xyq_{1,e}(x,y)=(-1)^{xy}. The conjecture further predicts the three listed cases according to whether α1\alpha_1 lifts to a fermion or boson and whether ρ\rho is self-dual, including the exact counts for A=Z3A=\mathbb{Z}_3; these claims are open in general.

Sources & referencesView supporting material

Primary source

Pinhas Grossman and Masaki Izumi, “Infinite families of potential modular data related to quadratic categories”, arXiv:1906.07397 (2019).

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