De-equivariantized generalized Haagerup modular data for mixed even parts

Let AA be an abelian group with AeZ2n×Z2A_e\cong\mathbb{Z}_{2^n}\times\mathbb{Z}_2 for n2n\geq2. Mixed-even-part conjecture. The modular data of the Drinfeld center of the Z2\mathbb{Z}_2-de-equivariantization are given by the stated data with G=Z2n2×Ao×Ao^G=\mathbb{Z}_{2^n}^2\times A_o\times\widehat{A_o}, q1,e(x,y)=ζ2nxyq_{1,e}(x,y)=\zeta_{2^n}^{xy}, and q1,o(a,χ)=χ(a)q_{1,o}(a,\chi)=\chi(a); the modular data of the original center are the corresponding tensor product with the quadratic form Q(x,y)=(1)xyQ(x,y)=(-1)^{xy}. The claim is open beyond the examples in the source.

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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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