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Toric elliptic fibrations and F-theory compactifications. (English) Zbl 1342.81405
Summary: The 102,581 at toric elliptic fibrations over \(\mathbb P^2\) are identified among the Calabi-Yau hypersurfaces that arise from the 473,800,776 reflexive 4-dimensional polytopes. In order to analyze their elliptic fibration structure, we describe the precise relation between the lattice polytope and the elliptic fibration. The fiber-divisor-graph is introduced as a way to visualize the embedding of the Kodaira fibers in the ambient toric fiber. In particular in the case of non-split discriminant components, this description is far more accurate than previous studies. The discriminant locus and Kodaira fibers of all 102,581 elliptic fibrations are computed. The maximal gauge group is \(\mathrm{SU}(27)\), which would naively be in contradiction with 6-dimensional anomaly cancellation.

MSC:
81T30 String and superstring theories; other extended objects (e.g., branes) in quantum field theory
14M25 Toric varieties, Newton polyhedra, Okounkov bodies
14D06 Fibrations, degenerations in algebraic geometry
Software:
PALP; polyhedra; SageMath
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References:
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