Gauge threshold corrections for local type-IIB/F-theory GUTs

Joseph P. Conlon, Eran Palti

Research output: Contribution to journalArticlepeer-review

50 Scopus citations


We study gauge threshold corrections for local grand unified theory models in IIB/F-theory. Consistency with holomorphy requirements of supergravity and the Kaplunovsky-Louis formula implies that the unification scale is enhanced by the bulk radius R from the string scale to MX=RMS. We argue that the stringy interpretation of this is via a locally uncanceled tadpole sourced by the hypercharge flux. This sources closed string modes propagating into the bulk-equivalently open string gauge coupling running up to the winding scale MX. The enhancement to RMs is tied to grand unified theory breaking by a globally trivial hypercharge flux and will occur in all models realizing this mechanism.

Original languageEnglish
Article number106004
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number10
StatePublished - 16 Nov 2009
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)


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