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The gamma and Strominger-Yau-Zaslow conjectures: a tropical approach to periods. (English) Zbl 1467.14097

Summary: We propose a new method to compute asymptotics of periods using tropical geometry, in which the Riemann zeta values appear naturally as error terms in tropicalization. Our method suggests how the Gamma class should arise from the Strominger-Yau-Zaslow conjecture. We use it to give a new proof of (a version of) the Gamma conjecture for Batyrev pairs of mirror Calabi-Yau hypersurfaces.

MSC:

14J33 Mirror symmetry (algebro-geometric aspects)
14T20 Geometric aspects of tropical varieties
53D37 Symplectic aspects of mirror symmetry, homological mirror symmetry, and Fukaya category
11G42 Arithmetic mirror symmetry
32G20 Period matrices, variation of Hodge structure; degenerations

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