Semi-Calabi-Yau orbifolds and mirror pairs
arXiv:1509.06685 · doi:10.1016/j.aim.2020.106998
Abstract
We generalize the cohomological mirror duality of Borcea and Voisin in any dimension and for any number of factors. Our proof applies to all examples which can be constructed through Berglund-Hübsch duality. Our method is a variant of the so-called Landau-Ginzburg/Calabi-Yau correspondence of Calabi-Yau orbifolds with an involution that does not preserve the volume form. We deduce a version of mirror duality for the fixed loci of the involution, which are beyond the Calabi-Yau category and feature hypersurfaces of general type.
35 pages, 2 figures. V2 Major revision, main theorem generalized and relation to orbifold cohomology given in dimension two. V3 Revised section 4 and proof of last theorem. V4 minor corrections. To appear in Adv. Math