Toda mirror conjecture for polynomial orbifold projective lines

Let g\mathfrak{g} be simply laced and choose iˉ\bar i by

iˉ={i=1,,n,g=An,n2,g=Dn,3,g=En.\bar i=\begin{cases}i=1,\dots,n,&\mathfrak{g}=\mathrm{A}_n,\\ n-2,&\mathfrak{g}=\mathrm{D}_n,\\ 3,&\mathfrak{g}=\mathrm{E}_n.\end{cases}

Let CgC_{\mathfrak g} be the polynomial P1\mathbb{P}^1-orbifold

Cg={P(iˉ,niˉ+1),g=An,P(2,2,n2),g=Dn,P(2,3,n3),g=En.C_{\mathfrak g}=\begin{cases}\mathbb{P}(\bar i,n-\bar i+1),&\mathfrak{g}=\mathrm{A}_n,\\ \mathbb{P}(2,2,n-2),&\mathfrak{g}=\mathrm{D}_n,\\ \mathbb{P}(2,3,n-3),&\mathfrak{g}=\mathrm{E}_n.\end{cases}

Orbifold mirror conjecture. With the notation of the preceding Toda mirror construction,

Xg,iˉTodaQHorb(Cg).X_{\mathfrak g,\bar i}^{\rm Toda}\simeq QH_{\rm orb}(C_{\mathfrak g}).

This predicts that, for the indicated simply-laced types and marked nodes, the Toda Frobenius manifold agrees with the orbifold quantum cohomology of the corresponding polynomial projective-line orbifold. The source says that this would follow from the preceding mirror conjecture together with known results, but does not establish it here.

Sources & referencesView supporting material

Primary source

Andrea Brini, “E_8 spectral curves”, arXiv:1711.05958 (2019).

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