Yukawas and discrete symmetries in F-theory compactifications without section

@inproceedings{GaraEtxebarria2014YukawasAD,
  title={Yukawas and discrete symmetries in F-theory compactifications without section},
  author={I{\~n}aki Gar{\'c}ıa-Etxebarria and Thomas W. Grimm and Jan P Keitel},
  year={2014}
}
In the case of F-theory compactifications on genus-one fibrations without section there are naturally appearing discrete symmetries, which we argue to be associated to geometrically massive U(1) gauge symmetries. These discrete symmetries are shown to induce non-trivial selection rules for the allowed Yukawa couplings in SU(N) gauge theories. The general discussion is exemplified using a concrete Calabi-Yau fourfold realizing an SU(5) GUT model. We observe that M2 instanton effects appear to… CONTINUE READING

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