E6 Yukawa couplings in F-theory as D-brane instanton effects

Collinucci, Andres; García-Etxebarria, Iñaki

Abstract

At weak coupling the neighborhood of a E6 Yukawa point in SU(5) GUT F-theory models is described by a non-resolvable orientifold of the conifold. We explicitly show, first directly in IIB and then via a mirror symmetry argument, that in this limit the E6 Yukawa coupling is better described as coming from the non-perturbative contribution of a euclidean D1-brane wrapping the non-resolvable cycle. We also discuss how the Mtheory description interpolates between the weak and strong coupling viewpoints.

• Journal Article Type: Article
• Acceptance Date: Mar 19, 2017
• Online Publication Date: Mar 29, 2017
• Publication Date: 2017-03
• Deposit Date: Oct 11, 2018
• Journal: Journal of High Energy Physics
• Print ISSN: 1126-6708
• Publisher: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
• Peer Reviewed: Peer Reviewed
• Volume: 03
• Article Number: 155
• DOI: https://doi.org/10.1007/jhep03%282017%29155
• Public URL: https://durham-repository.worktribe.com/output/1316606
• Related Public URLs: https://arxiv.org/abs/1612.06874