Minimal log discrepancies of hypersurface mirrors
Algebraic Geometry
2024-01-30 v2
Abstract
For certain quasismooth Calabi-Yau hypersurfaces in weighted projective space, the Berglund-H\"{u}bsch-Krawitz (BHK) mirror symmetry construction gives a concrete description of the mirror. We prove that the minimal log discrepancy of the quotient of such a hypersurface by its toric automorphism group is closely related to the weights and degree of the BHK mirror. As an application, we exhibit klt Calabi-Yau varieties with the smallest known minimal log discrepancy. We conjecture that these examples are optimal in every dimension.
Keywords
Cite
@article{arxiv.2304.13823,
title = {Minimal log discrepancies of hypersurface mirrors},
author = {Louis Esser},
journal= {arXiv preprint arXiv:2304.13823},
year = {2024}
}
Comments
21 pages, v2: final version, to appear in Forum of Math., Sigma