Abstract
Non-flat fibrations often appear in F-theory GUT models, and their interpretation is still somewhat mysterious. In this note we explore this issue in a model of particular phenomenological interest, the global SU(5) × U(1) Peccei-Quinn F-theory model. We present evidence that co-dimension three non-flat fibres give rise to higher order couplings in the effective four-dimensional superpotential — more specifically, in our example we find 10 5 5 5 couplings.
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ArXiv ePrint: 1806.05612
Formerly at Max-Planck-Institut für Physik, Föhringer Ring 6, 80805 München, Germany. (Iñaki García-Etxebarria)
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Achmed-Zade, I., García-Etxebarria, I. & Mayrhofer, C. A note on non-flat points in the SU(5) × U(1)PQ F-theory model. J. High Energ. Phys. 2019, 13 (2019). https://doi.org/10.1007/JHEP05(2019)013
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DOI: https://doi.org/10.1007/JHEP05(2019)013