GKZ hypergeometric series for the Hesse pencil, chain integrals and orbifold singularities
J Zhou - SIGMA. Symmetry, Integrability and Geometry: Methods …, 2017 - emis.de
SIGMA. Symmetry, Integrability and Geometry: Methods and Applications, 2017•emis.de
The GKZ system for the Hesse pencil of elliptic curves has more solutions than the period
integrals. In this work we give different realizations and interpretations of the extra solution,
in terms of oscillating integral, Eichler integral, chain integral on the elliptic curve, limit of a
period of a certain compact Calabi-Yau threefold geometry, etc. We also highlight the role
played by the orbifold singularity on the moduli space and its relation to the GKZ system.
integrals. In this work we give different realizations and interpretations of the extra solution,
in terms of oscillating integral, Eichler integral, chain integral on the elliptic curve, limit of a
period of a certain compact Calabi-Yau threefold geometry, etc. We also highlight the role
played by the orbifold singularity on the moduli space and its relation to the GKZ system.
Abstract
The GKZ system for the Hesse pencil of elliptic curves has more solutions than the period integrals. In this work we give different realizations and interpretations of the extra solution, in terms of oscillating integral, Eichler integral, chain integral on the elliptic curve, limit of a period of a certain compact Calabi-Yau threefold geometry, etc. We also highlight the role played by the orbifold singularity on the moduli space and its relation to the GKZ system.
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