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Abelian gauge symmetries and proton decay in global F -theory GUTs
Grimm, Thomas W. ; Weigand, Timo
Physical review. D, Particles and fields, 2010-10, Vol.82 (8), Article 086009
[Periódico revisado por pares]
United States
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Título:
Abelian gauge symmetries and proton decay in global F -theory GUTs
Autor:
Grimm, Thomas W.
;
Weigand, Timo
Assuntos:
BARYONS
;
BOSONS
;
COMPACTIFICATION
;
DECAY
;
ELEMENTARY PARTICLES
;
FERMIONS
;
FIELD THEORIES
;
FOUR-DIMENSIONAL CALCULATIONS
;
GAUGE INVARIANCE
;
GRAND UNIFIED THEORY
;
HADRONS
;
HIGGS BOSONS
;
HIGGS MODEL
;
INVARIANCE PRINCIPLES
;
LEPTONS
;
LIE GROUPS
;
MASSLESS PARTICLES
;
MATHEMATICAL MODELS
;
NEUTRINOS
;
NUCLEONS
;
PARTICLE DECAY
;
PARTICLE MODELS
;
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
;
POSTULATED PARTICLES
;
PROTONS
;
QUANTUM FIELD THEORY
;
RESOLUTION
;
SINGULARITY
;
SU GROUPS
;
SU-5 GROUPS
;
SYMMETRY
;
SYMMETRY GROUPS
;
U GROUPS
;
U-1 GROUPS
;
UNIFIED GAUGE MODELS
É parte de:
Physical review. D, Particles and fields, 2010-10, Vol.82 (8), Article 086009
Descrição:
The existence of Abelian gauge symmetries in four-dimensional F-theory compactifications depends on the global geometry of the internal Calabi-Yau four-fold and has important phenomenological consequences. We study conceptual and phenomenological aspects of such U(1) symmetries along the Coulomb and the Higgs branch. As one application we examine Abelian gauge factors arising after a certain global restriction of the Tate model that goes beyond a local spectral cover analysis. In SU(5) grand unified theory (GUT) models this mechanism enforces a global U(1){sub X} symmetry that prevents dimension-4 proton decay and allows for an identification of candidate right-handed neutrinos. We invoke a detailed account of the singularities of Calabi-Yau four-folds and their mirror duals starting from an underlying E{sub 8} and E{sub 7}xU(1) enhanced Tate model. The global resolutions and deformations of these singularities can be used as the appropriate framework to analyze F-theory GUT models.
Editor:
United States
Idioma:
Inglês
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