A Note on Non-Flat Points in the $SU(5)\times U(1)$ PQ F-Theory Model
High Energy Physics - Theory
2019-05-15 v3
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 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 couplings.
Keywords
Cite
@article{arxiv.1806.05612,
title = {A Note on Non-Flat Points in the $SU(5)\times U(1)$ PQ F-Theory Model},
author = {Ismail Achmed-Zade and Iñaki García-Etxebarria and Christoph Mayrhofer},
journal= {arXiv preprint arXiv:1806.05612},
year = {2019}
}
Comments
26 pages. v2: Revised version to appear in JHEP. v3: Additional discussion in the conclusions