Bryan–Gholampour's type D quantum McKay formula

From papers

Let GSO(3)G\subset SO(3) be a polyhedral subgroup, let X=[C3/G]\mathcal{X}=[\mathbb{C}^{3}/G], and let F0X(x1,,xn)F_{0}^{\mathcal{X}}(x_1,\ldots,x_n) denote its C\mathbb{C}^{*}-equivariant genus-zero orbifold Gromov–Witten potential, with the unit parameter x0x_0 set to zero. Let RR be the associated root system, let R+R^{+} be its set of positive roots, and let hh be the series used in the formula. For each positive root β\beta, define

Pβ=ρbρG(2πnρ+gG3χρ1(g)χρ(g)xg),P_{\beta}=\sum_{\rho}\frac{b_{\rho}}{|G|}\left(2\pi n_{\rho}+\sum_{g\in G}\sqrt{3-\chi_{\rho_1}(g)}\,\overline{\chi}_{\rho}(g)x_{\llbracket g\rrbracket}\right),

where the sum is over the non-trivial irreducible representations of GG. Bryan–Gholampour's type D formula.

F0X(x1,,xn)=12βR+h(π+Pβ).F_{0}^{\mathcal{X}}(x_1,\ldots,x_n)=\frac{1}{2}\sum_{\beta\in R^{+}}h(\pi+P_{\beta}).

The source presents this as a conjectural formula for the polyhedral subgroups of SO(3)SO(3), extending the quantum McKay correspondence from the binary polyhedral case; no resolution status is supplied in the provided text.

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Sources & referencesView supporting material

Primary source

Xiaowen Hu, “The Quantum McKay Correspondence for Singularities of type D”, arXiv:1207.4545 (2012).

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