New global F-theory GUTs with U(1) symmetries

Braun, Volker, Grimm, Thomas W. and Keitel, Jan (2013) New global F-theory GUTs with U(1) symmetries. Journal of High Energy Physics, 2013 (9). ISSN 1029-8479

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We construct global F-theory GUTs with SU(5)×U(1) gauge group defined by specifying a fully resolved Calabi-Yau fourfold and consistent four-form G-flux. Its specific U(1) charged matter spectrum allows the desired Yukawa couplings, but forbids dangerous proton decay operators. The model we find: (1) does not follow from an underlying higgsed E_8 gauge group (2) leaves the class of theories that can be analyzed with current split-spectral cover techniques. This avoids recently proposed no-go theorems for models with hypercharge flux, as required to break the GUT group. The appearance of additional fields is related geometrically to considering a more general class of sections and 4–1 splits. We show explicitly that the four-dimensional chiral matter index can still be computed using three-dimensional one-loop Chern-Simons terms.

Item Type: Article
Divisions: School of Theoretical Physics > Preprints
Date Deposited: 05 Oct 2017 19:27
Last Modified: 15 Dec 2022 02:34
Identification Number: DIAS-STP-13-02

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