2024
DOI: 10.1007/jhep04(2024)012
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Hwang-Oguiso invariants and frozen singularities in special geometry

Sergio Cecotti

Abstract: In Special Geometry there are two inequivalent notions of “Kodaira type” for a singular fiber: one associated with its local monodromy and one with its Hwang-Oguiso characteristic cycle. When the two Kodaira types are not equal the geometry is subtler and its deformation space gets smaller (“partially frozen” singularities). The paper analyzes the physical interpretation of the Hwang-Oguiso invariant in the context of 4d $$ \mathcal{N} $$ N = 2 QFT and describes the surprisin… Show more

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