Flux and Instanton Effects in Local F-theory Models and Hierarchical Fermion Masses

Details Flux and Instanton Effects in Local F-theory Models and Hierarchical Fermion Masses Flux and Instanton Effects in Local F-theory Models and Hierarchical Fermion Masses

2011-04-13

arxiv.org/abs/1104.2609v2

JHEP 1108:152,2011

Physics

High Energy Physics

High Energy Physics - Theory

84 pages, 1 figure. v2: minor corrections and references added

Scientific paper

10.1007/JHEP08(2011)152

We study the deformation induced by fluxes and instanton effects on Yukawa couplings involving 7-brane intersections in local F-theory constructions. In the absence of non-perturbative effects, holomorphic Yukawa couplings do not depend on open string fluxes. On the other hand instanton effects (or gaugino condensation on distant 7-branes) do induce corrections to the Yukawas. The leading order effect may also be captured by the presence of closed string (1,2) IASD fluxes, which give rise to a non-commutative structure. We check that even in the presence of these non-perturbative effects the holomorphic Yukawas remain independent of magnetic fluxes. Although fermion mass hierarchies may be obtained from these non-perturbative effects, they would give identical Yukawa couplings for D-quark and Lepton masses in SU(5) F-theory GUT's, in contradiction with experiment. We point out that this problem may be solved by appropriately normalizing the wavefunctions. We show in a simple toy model how the presence of hypercharge flux may then be responsible for the difference between D-quarks and Lepton masses in local SU(5) GUT's.

Affiliated with

Also associated with

No associations

Rating

Flux and Instanton Effects in Local F-theory Models and Hierarchical Fermion Masses does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Flux and Instanton Effects in Local F-theory Models and Hierarchical Fermion Masses, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flux and Instanton Effects in Local F-theory Models and Hierarchical Fermion Masses will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-164646